NBS 4-40 Set Screw For Rear Takedown Detent Spring - 1/8" Long - SS - Qty. 1 - 94355A130
Original price was: $1.39.$1.09Current price is: $1.09.Save $0.30 (22%)
In stock
For use with lower receivers that have a 4-40 threaded rear takedown detent spring hole. Purchase includes only one screw.
Note: You may need to snip 1/8″ off the detent spring to prevent excess pressure between the detent and the rear takedown pin.
| Material | 18-8 Stainless Steel |
| Thread Size | 4-40 |
| Length | 1/8“ |
| Drive Size | 0.050″ |
| Screw Size Decimal Equivalent | 0.112″ |
| Hardness | Rockwell B80 |
| Specifications Met | ASME B18.3 |
| Thread Type | UNC |
| Thread Spacing | Coarse |
| Thread Fit | Class 3A |
| Thread Direction | Right Hand |
| Drive Style | Hex |
| Tip Type | Flat |
NBS — Our In-House Brand for Builders Who Demand Reliable Performance and Real Value.
Designed for builders who demand reliable performance and real value without unnecessary hype or inflated pricing. NBS stands for "No Bullshit."
Built on Strong Industry Partnerships
Through the strong partnerships AR15Discounts has built with trusted suppliers and vendors, we regularly gain access to premium components often manufactured by or for leading industry names. By purchasing these in volume, we bring them to you under the NBS label, ensuring proven quality reaches your build at a fair price, without the added cost of extensive marketing.
Quality You Can Trust
Every NBS product is specified to the exacting standards we apply to our own rifles. Each component features precision CNC machining, American-made key components where it counts, robust materials, dependable steels, and durable finishes engineered for long-term reliability. These items are either sourced from reputable OEMs or carefully assembled in-house using established name-brand elements, maintaining consistent excellence throughout the lineup.
Complete Solutions for Serious Builders
From stripped and complete uppers to bolt carrier groups, handguards, lower parts kits, and beyond, NBS provides a unified, affordable selection that allows you to complete confident, high-performing builds.
Backed by a Limited Lifetime Warranty
All NBS products come with our Limited Lifetime Warranty for the original owner, covering defects in materials and workmanship. AR15Discounts stands firmly behind these parts because, as shooters ourselves, we use and trust them, delivering honest value and gear you can rely on.
| Weight | 0.016 oz |
|---|---|
| Dimensions | 0.125 × 0.112 × 0.112 in |
| MPN | 94355A130 |
| UPC | 999993036 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
Customer Reviews
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US
Love this store
Quick, easy, and painless. How come I never heard of this store? All this time and this place existed, it’s a one stop shop. I’ll be a returning customer.
USWhat you need if you have an Aero or BA enhanced lower!
If you have a lower with the threaded hole to capture the takedown pin detent/spring then this is exactly what you're looking for. Aero Precision M4E1 or Ballistic Advantage enhanced lowers will have need of this set screw if you didn't get one in your lpk(or lost/damaged it). Trust when i say buying 10 of these is a good investment if you're a builder that loves these lowers and plans to use them. This store is top notch in my experience, They'll not run from you if you need something the way some others might, And you want wait 6 months for an email to make something right or answer an inquiry, They'll stand tall! Shop with confidence here, Knowing they want take you money and run afterward.
USSmall but mighty handy
These are EXACTLY the product needed to secure the Takedown pin spring if you have a threaded hole in your lower! Such a small but incredibly useful item to make taking the end plate and buffer tube off.
USSet Screw
Fit is perfect!
USset screw
they are great i love them i need some moore
