Product guide

Pachmayr Master Gunsmith Hex Head Ring and Base Screw Kit, 142-Piece

The Pachmayr Master Gunsmith Hex Head Ring and Base Screw Kit is a 142-piece assortment of scope ring and base screws for gunsmithing and scope installation. Its stated selection spans several thread sizes and screw lengths, while customer feedback also flags concerns about screws stripping easily.

At a glance

Listing describes 10 each of 14 styles of 3/32-inch hex-style scope ring and base screws.
The listed assortment includes #6-40, #6-48 and #8-40 threads, with fillister and oval heads and multiple lengths.
Manufacturer information describes a compartmented storage box and mentions tweezers and a thread-size gauge that can also serve as a shortening jig.

Price

$30.71Save 21%

Reference price: ~~$38.98~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

A broad assortment of 142 pieces offers multiple listed thread and length combinations for gunsmithing tasks.
Hex-style drives are presented as a non-slip alternative to slotted fasteners in the manufacturer description.

Cons

Customer feedback reports that some screws strip easily, a relevant concern when screws may need repeated installation or removal.

Technical specifications

13 specifications

Identity
Brand	Pachmayr
Model	03058

Dimensions and installation
Dimensions listed	8 x 5 x 1 inches
Weight listed	9.12 ounces

Materials and protection
Material listed	Steel

Kit details
Number of pieces	142
Screw head styles	Fillister, Hex, Oval
Thread size	#6-40
Fastener size	No. 8
Compatible groove diameter	0.13 inches
Drive system	External Hex
Exterior finish	Black Oxide
Thread coverage	Fully Threaded

What to know before buying

Listing details to confirm

The general specifications list #6-40, but the stated 14-style kit contents also include #6-48 and #8-40. Confirm the specific assortment and fit against the fasteners needed. The manufacturer describes a storage box, tweezers and a thread-size gauge in one section, while the explicit included-components field only says “Kit,” so check the selected listing for those items. Customer reports of stripping are feedback, not independently verified performance findings.

What’s in the box

Screw kitIncluded
Compartmented storage boxCheck selected pack
TweezersCheck selected pack
Thread-size gauge and shortening jigCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Gunsmiths or scope owners seeking an assortment of listed scope ring and base screw sizes and lengths.
Buyers who prefer hex-style screw drives to slotted fasteners.

Less suited to

Anyone who needs a guaranteed match for a particular firearm or mount without verifying thread and length first.
Buyers who require confirmed package contents or assurance against screw stripping.

Customer reviews on Amazon

4.6 / 5 · 332 ratings

5 stars78%78%
4 stars15%15%
3 stars4%4%
2 stars1%1%
1 star2%2%

Customer feedback describes the assortment as complete and useful for gunsmithing and scope installation, while also reporting screws that strip easily. The range of listed thread sizes and lengths may suit buyers who need several options, but those reports make careful sizing and handling important. Aggregate ratings lean positive overall, but do not establish screw durability or explain individual ratings.

Positive themes

Customers describe the assortment as useful for gunsmithing and scope installation.

Negative themes

Customer feedback reports that screws can strip easily.

Frequently asked questions

What screw sizes are listed for the assortment?

The kit details list #6-40, #6-48 and #8-40 threads, with several lengths across fillister and oval heads. Verify the required thread and length before use.

How many screws are in the kit?

The title and listing describe 142 pieces, with 10 each of 14 stated styles.

Does the kit include tweezers and a thread-size gauge?

The manufacturer description mentions tweezers and a gauge that also serves as a shortening jig, but the explicit included-components field only says “Kit.” Confirm the contents of the selected listing.

What do customers report about the screws?

Customer feedback describes the assortment as useful for gunsmithing and scope installation, but also reports that screws can strip easily. These are reported experiences, not a verified test result.