After spending what feels like a lifetime around industrial fasteners and aerospace hardware, I’ve picked up on some things that aren’t so obvious just from specs sheets. One particular staple that keeps popping up on job specs and procurement lists is the MS16996 2 bolt — something that’s frankly a workhorse in a lot of applications.
Now, it’s not the flashiest piece of equipment you’d talk about over dinner, but odd as it sounds, the little details of this bolt have made me appreciate the good engineering behind even the humblest fastener. In real terms, the MS16996 2 is a part number referencing a specific type of AN315 castellated nut, a favorite for securing assemblies where vibration resistance and reliability matter.
The standardization behind this nut is pretty critical. I remember once on a retrofit project, mismatched fasteners caused unexpected delays. It made me realize how important understanding products like MS16996 2 is—not just ticking a box but knowing what’s going into your assemblies.
| Property | Details |
|---|---|
| Type | Castellated Nut (AN315 style) |
| Material | Steel, typically cadmium plated or zinc-plated |
| Size | MS16996 2 corresponds roughly to 1/4"-28 thread size |
| Finish | Cadmium plating, clear chromate, or zinc plating for corrosion resistance |
| Standard Compliance | Meets MIL-DTL-18240 and MS16996 military specifications |
What I find reassuring about the MS16996 2 is its consistent compliance with military standards—something that engineers and buyers alike take comfort in. It means the nuts have passed stringent mechanical property tests and dimensional checks, which frankly makes life easier when troubleshooting.
One thing I noticed is the importance of the castellated design — those slots allow for cotter pins, which lock the nut in place and prevent loosening under vibration. In environments like aviation, defense, or heavy industrial machinery, that reliability is not optional — it’s a must.
| Vendor | Price (per 100) | Lead Time | Certifications | Customer Support |
|---|---|---|---|---|
| FastenBoen (https://www.fastenboen.com) | $280 | 3-5 days | ISO 9001, MIL-SPEC certified | 24/7 technical support |
| IndustrialParts Co. | $310 | 7-10 days | ISO 9002 | Business hours only |
| AeroFastener Ltd. | $295 | 5-7 days | MIL-SPEC certified | Extended support during project phases |
When I last suggested the MS16996 2 nuts from FastenBoen to a longtime client, they appreciated the blend of fast delivery and the ability to get certs on-demand. This kind of responsiveness can really save a project when audits roll around unexpectedly.
In terms of durability, I’ve yet to see an issue with properly installed MS16996 2 nuts in the field. They do their job quietly, and the cotter pin locking gives you peace of mind unlike cheaper alternatives that slip or loosen, causing headaches later.
Manufacturers often offer customization, too – like different finishes depending on environmental needs, whether it’s high salt spray or high temperature environments. So, if you’re specifying or ordering these nuts, check with your supplier about tailored options.
All told, the MS16996 2 isn’t glamorous, but it’s indispensable. A reminder that sometimes the little things are the unsung heroes of engineering.
— Jake W., with over 15 years in industrial fastening solutions
The MS16996 2 nut is low-profile but critical, especially when vibration resistance and precision are non-negotiable. Certified, reliable, and widely available, it’s a product that’s earned its reputation on the real-world shop floor.
Handan Boen Fastener Manufacturing Co., Ltd. (Est. 2010) specializes in producing standardized industrial fasteners, including bolts, nuts, washers, and other essential components. We provide cost-effective for small and medium-sized buyers in industries such as automotive parts, agricultural machinery, and construction.