A missing or damaged scope base screw can stall an optic installation. The right replacement must fit the mount and threaded hole—not just look close to the original.
These 10 picks range from small packs in common #6-48 and #8-40 sizes to larger assortments for a workbench. Use the guide below to narrow your choice before ordering.
Best 10 Scope Base Screw Kits Picks for 2026
Best Torx Assortment
Pachmayr Master Gunsmith Torx Screw Kit
- 200 screws across 20 styles
- Six-lobe Torx-style heads
- Compartmented storage box
Best For: An organized bench supply of Torx-style screws
Best Small Mixed-Thread Set
- 25 screws in five sizes
- Lists #6-48 and #8-40 threads
- Verify conflicting drive and length details
Best For: Small replacements across two listed thread sizes
Best Hex-Head Assortment
- 142-piece assortment
- 14 listed screw styles
- Compartmented storage box
Best For: Organized hex-style ring and base screw replacements
Best Pre-Coated Option
- Listed #6-48 and #8-40 threads
- Pre-applied blue threadlocker
- Confirm conflicting package counts
Best For: Pre-coated Torx replacements in several listed lengths
Best #8-40 Assortment
Monstrum Gunsmithing Screw Pack
- #8-40 screws in three lengths
- Standard and flat heads; six of each type
- Hardened steel with T10 drives
Best For: Confirmed #8-40 installations needing multiple head styles
Best Ready-to-Use Mixed-Thread Kit
QYT 30-Piece Scope Mount Screw Set
- #6-48 and #8-40 in three lengths
- 30 screws with blue threadlocker
- T10 wrench included
Best For: Mixed-thread spares with pre-applied threadlocker
Best Oval-Head Option
Gotical 25-Piece Scope Base Screw Set
- 25 oval-head screws in five sizes
- #6-48 and #8-40 threads
- Verify conflicting length and drive listings
Best For: Oval-head replacements after checking exact dimensions
Ready-to-Install Pick
30-Piece 6-48 and 8-40 Torx Screw Set
- 30 screws across six size combinations
- Pre-applied blue threadlocker
- Matching Torx wrench included
Best For: Common scope-base and rail screw replacements
Best Heavy-Duty Pick
Five-Size 6-48 and 8-40 Screw Assortment
- Five listed size options
- Hardened black-oxide screws
- Verify conflicting length and drive details
Best For: Verified oval-head base or ring screw replacements
High-Count Pick
- 80 base screws
- 70 ring screws
- Individual sizes not specified in supplied listing
Best For: Keeping a larger base-and-ring screw assortment
Best Torx Assortment – Pachmayr Master Gunsmith Torx Screw Kit
Among scope base screw kits, this Pachmayr option is a substantial choice for anyone who regularly needs Torx-style ring and base screws. It includes 10 each of 20 screw styles in a compartmented storage box.
Best For: Keeping a broad selection of Torx-style ring and base screws organized at the bench.
Pros:
- Includes 200 screws across 20 styles.
- Six-lobe Torx-style heads suit matching drivers.
- Individual storage compartments separate screw styles.
Cons:
- Does not provide hex-head screws.
- Check the needed thread and length against the kit before buying.
Choose this kit for breadth and tidy storage, rather than assuming every screw will match a particular mount.
Best Small Mixed-Thread Set – Gotical Oval-Head Screw Set
If you need a smaller selection of scope base screw kits, this Gotical set provides 25 black-oxide, oval-head screws: five each of five listed #6-48 and #8-40 sizes. Its T-15 star-drive listing is worth checking against the driver you intend to use.
Best For: Replacing a few scope base or ring screws when you need both listed thread sizes on hand.
Pros:
- Covers #6-48 and #8-40 threads in multiple lengths.
- Includes five screws per size.
- Lists hardened Grade 12.9 steel and a black-oxide finish.
Cons:
- Only five screws of each size are supplied.
- The listing gives conflicting #6-48 length and drive-bit details; confirm the exact specifications before ordering.
This is a focused replacement set, but the inconsistent listing details make a compatibility check especially important.
Best Hex-Head Assortment – Pachmayr 142-Piece Screw Kit
For buyers comparing scope base screw kits who prefer hex-drive hardware, this Pachmayr kit offers 142 pieces. The supplied description identifies 10 each of 14 screw styles and a storage box with separate compartments.
Best For: Bench work that calls for an organized assortment of hex-style ring and base screws.
Pros:
- 142-piece kit provides a sizable assortment.
- Includes 14 screw styles with 10 of each listed.
- Compartmented box helps keep styles separate.
Cons:
- Not the right choice if you specifically need Torx-drive screws.
- Verify the required thread, head shape, and length before installation.
The assortment and storage box make sense for recurring replacements; confirm individual screw fit rather than relying on the kit name alone.
Best Pre-Coated Option – WOSUWENGE Torx Screw Set
This WOSUWENGE entry stands out among scope base screw kits for its listed pre-applied blue threadlocker. It covers #6-48 and #8-40 threads in 6 mm, 8 mm, and 10 mm lengths, with Torx heads and an included wrench.
Best For: Buyers who want common listed thread-and-length options with pre-coated screws.
Pros:
- Lists two thread sizes and three lengths for each.
- Pre-applied blue threadlocker saves a separate application step.
- Includes a Torx wrench and black-oxide-finished alloy-steel screws.
Cons:
- The supplied notes conflict on quantity: the bullets say 60 screws, while the details say 30.
- Verify hole thread and usable screw length for your specific mount.
The pre-coating is convenient, but confirm the package count and fit before choosing it for a particular installation.
Best #8-40 Assortment – Monstrum Gunsmithing Screw Pack
For scope base screw kits focused on #8-40 hardware, this Monstrum pack offers 6mm, 8mm, and 10mm lengths in both standard-head and flat-head styles. It is a practical choice when your receiver or mount calls for #8-40 screws and you want several lengths on hand.
Best For: Buyers who have confirmed a #8-40 thread requirement and want a choice of head styles and lengths.
Pros:
- Six screw types, with six screws of each type.
- Hardened-steel screws have T10 Torx drives designed to resist stripping.
- Backed by Monstrum’s lifetime guarantee.
Cons:
- Does not include #6-48 screws.
- Listed receiver compatibility is not universal; check your hardware specifications before ordering.
The two head styles make this more flexible than a single-style #8-40 pack, but thread size, length, and head fit still need to match your specific mounting hardware.
Best Ready-to-Use Mixed-Thread Kit – QYT 30-Piece Scope Mount Screw Set
Among scope base screw kits, this QYT set stands out for including both #6-48 and #8-40 threads in 6mm, 8mm, and 10mm lengths. Its 30 screws, pre-applied blue threadlocker, and included T10 wrench make it a convenient kit when you need to match different mounting depths.
Best For: Buyers who want both common thread sizes plus an included wrench and pre-coated screws.
Pros:
- Five screws per thread-size and length combination, for 30 total.
- Hardened carbon steel has a black oxide finish.
- Pre-applied blue threadlocker and a T10 Torx wrench are included.
Cons:
- Only three lengths are provided for each thread size.
- Fit still depends on the mount’s required thread, head, and screw length.
This is a well-equipped mixed-thread option for keeping spare mounting screws available; confirm the dimensions of your existing hardware before choosing a replacement.
Best Oval-Head Option – Gotical 25-Piece Scope Base Screw Set
If you are comparing scope base screw kits for oval-head hardware, this Gotical set supplies 25 black-oxide screws across five listed size combinations. It includes both #6-48 and #8-40 threads, giving you choices for mounts that require those specific sizes.
Best For: Buyers seeking oval-head screws in both #6-48 and #8-40 sizes.
Pros:
- Five screws per size across five sizes.
- Includes #8-40 screws in 6mm, 7.7mm, and 8.5mm lengths.
- Listed as hardened Grade 12.9 screws with a black oxide finish; two wrenches are included.
Cons:
- The supplied notes disagree on the longer #6-48 length, listing 8mm in the title and 9mm in the bullets.
- The drive is described as both T-15 and T10; verify the bit size before relying on your existing tools.
The oval-head selection is the main reason to consider this kit. Because its listings conflict on one length and the drive size, check the exact specifications against your mount before purchasing.
Ready-to-Install Pick – 30-Piece 6-48 and 8-40 Torx Screw Set
For shoppers comparing scope base screw kits, this 30-piece set offers five screws each in six thread-and-length combinations: #6-48 and #8-40, both in 6 mm, 8 mm, and 10 mm lengths. It includes a Torx wrench and screws with pre-applied blue threadlocker.
Best For: Keeping common scope-base and rail screw sizes on hand for mounting or replacement work.
Pros:
- Includes both #6-48 and #8-40 threads in three lengths each.
- Pre-applied medium-strength blue threadlocker adds convenience.
- Hardened-steel Torx screws and a matching wrench are included.
Cons:
- Only five screws are supplied per size.
- Thread, length, and head fit still need checking against the firearm and mount.
This is a practical small assortment when you need several common sizes rather than a large shop kit. Confirm the required screw dimensions before installation.
Among scope base screw kits, this assortment stands out for its oval-head Torx screws and five listed size options spanning #6-48 and #8-40 threads. The listing describes hardened, heat-treated screws with a black-oxide finish and includes two wrenches.
Best For: Buyers seeking oval-head replacement screws for scope bases or rings who can verify the exact dimensions they need.
Pros:
- Covers both #6-48 and #8-40 thread sizes.
- Offers five listed screw-size options, with five of each size.
- Includes two wrenches.
Cons:
- The title and bullets disagree on one #6-48 length: 8 mm versus 9 mm.
- The listing gives conflicting drive descriptions, so check the required bit before purchase.
The range of lengths could be useful for matching an existing screw, but the inconsistent specifications make careful verification especially important.
If you need scope base screw kits for an assortment of mounting work, Leupold’s model 52395 offers a substantially larger screw count: 80 base screws and 70 ring screws. The supplied specifications describe fully threaded Torx fasteners in various sizes.
Best For: Buyers who want a larger assortment of base and ring screws on hand.
Pros:
- Includes 150 screws total.
- Supplies both base screws and ring screws.
- Torx heads provide a consistent drive style across the kit.
Cons:
- The supplied listing does not identify each included screw size.
- Fit with a particular base or ring must be checked separately.
The high screw count makes this the assortment-focused choice of the three, but confirm the specific thread and dimensions your mount requires before relying on it for a particular job.
How We Picked These Scope Base Screw Kits
We prioritized useful thread-size coverage, stated length options, drive and head styles, and whether each option makes sense as a targeted replacement or a broader bench assortment. The list includes Torx and hex-drive choices, mixed #6-48/#8-40 sets, an #8-40-specific pack, and brand-specific options. Product titles alone cannot establish fit, so treat every listed application as a starting point and confirm dimensions against your firearm and mount.
Quick Comparison: Which Type Fits Your Job?
- Large assortments: The Pachmayr Master Gunsmith kits suit someone who regularly works with different rings and bases and wants spares on hand. Choose the Torx-style or hex-head version to match the fasteners you use.
- Small mixed-size packs: The 30-piece #6-48/#8-40 sets and five-of-each-size packs offer multiple common lengths without committing to a large kit. Check the included head profile and driver size before buying.
- Focused replacements: The Monstrum #8-40 pack is worth considering when you have confirmed that thread size; the Leupold kit is a starting point for a compatible Leupold setup. Neither brand name nor thread label alone guarantees a fit.
Key Buying Factors for Scope Base Screw Kits
Thread Size Comes First
#6-48 and #8-40 are different thread sizes, not interchangeable alternatives. Check your firearm’s threaded holes, the mount maker’s instructions, or an undamaged original screw. Do not force a screw that resists threading by hand; it can damage the receiver threads.
Length and Head Shape Matter
Measure the original screw or follow the mount manufacturer’s specification. A screw that is too short may not engage enough threads; one that is too long can bottom out or interfere with the firearm’s mechanism. Flat, oval, and other head profiles seat differently, so match the countersink or screw recess in your base. A listed length may use a measurement convention that varies by head style—verify how it is measured before substituting.
Match the Drive and Installation Instructions
Torx sizes such as T10 and T15 are not interchangeable, and hex-head screws require the correctly sized hex driver. Use a well-fitting bit to avoid stripping the recess. Clean threads and follow the firearm or mount manufacturer’s guidance for torque and threadlocker; a universal torque value is not safe to assume.
Who Should Buy Which Scope Base Screw Kits?
For a single repair, buy the smallest pack that matches the confirmed thread, length, head, and drive. If you service several mounts, a larger Pachmayr assortment offers more flexibility, but check its contents for the sizes you actually use. Choose a mixed #6-48/#8-40 set when you need common spares for multiple known applications. If your setup calls specifically for #8-40 or a manufacturer-specified replacement, start with the focused Monstrum or Leupold option and verify compatibility before installation.