BATTLEARMS BAD INC T10 Screws 4-40 x 5/16 Selector Screw

Battle Arms Development, Inc. (BAD INC) 4-40 x 5/16" 6-Lobe T-10 Flat Head Cap Screw MS 4037 Alloy Steel Black Oxide 2-Pack Made in USA

The Battle Arms Development 4-40 x 5/16" 6-Lobe T-10 Flat Head Cap Screw is a compact replacement or upgrade hardware option for compatible firearm components and accessories. Made from 4037 alloy steel, heat treated, and finished in black oxide, this screw is built for dependable fitment and consistent performance in demanding applications.

Key Features

4-40 x 5/16" flat head cap screw
6-lobe T-10 drive design
Made from 4037 alloy steel
Heat treated for added strength
Black oxide finish
Includes 2 screws per pack
Made in the USA

This 2-pack is a practical choice for builders, armorers, and firearm owners who need quality replacement hardware with a clean, professional finish. Its durable construction and precise sizing make it well suited for maintenance, upgrades, or keeping spare parts on hand for compatible setups.

Specifications

• Manufacturer: Battle Arms Development, Inc. (BAD INC)
• Size: 4-40 x 5/16"
• Drive Type: 6-Lobe T-10
• Head Style: Flat Head Cap Screw
• Material: 4037 Alloy Steel
• Finish: Black Oxide
• Heat Treated: Yes
• Pack Quantity: 2-Pack
• Country of Origin: Made in USA