Home · NSN 01-645-5684

NSN 01-645-5684 — Setscrew

NIIN 01-645-5684 · unit of issue EA · AAC J (not stocked, central procurement) · source of supply SMS

NSN 01-645-5684 is the national stock number for a setscrew. It cross-references to 1 manufacturer part number from 2 CAGE codes, including National Aerospace Standards Committee Aerospace Industries Association Of America Inc Not For Rfq Or Solicitation Use, Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M; the primary is MS51966-159. The unit of issue is EA and the FLIS list price is $1,901.10.

No government purchase of this stock number is on our record yet. No seller has confirmed stock of it here in the last 60 days; watching the number is free and the first listing triggers an alert.

part number from 2 CAGEs

open solicitations, all agencies

government buys in 24 months

sellers with confirmed stock

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Cross-references

Part numbers filed against this stock number, with the manufacturer (CAGE) and the FLIS reference codes.

Part number	CAGE	Manufacturer	Reference	Variation
MS51966-159	80205	National Aerospace Standards Committee Aerospace Industries Association Of America Inc Not For Rfq Or Solicitation Use	3 · Design control (vendor)	2 · Fully interchangeable
MS51966-159	96906	Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M	5 · Secondary reference	9 · Reference only

Government demand

Nothing open right now. Watch this NSN and we will email you when it is solicited.

What the government paid

No government purchase on record for this NSN.

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices.

Sellers with confirmed stock

No seller has confirmed stock on this NSN in the last 60 days. Watch it and we will email you when one does, or request a quote on MS51966-159.

Listings appear here only while the seller has confirmed them within 60 days. Sellers: list this part free.

DLA management data

FLIS unit price: $1,901.10
Unit of issue: EA
Acquisition advice: J — Not stocked, central procurement
Source of supply: SMS
Effective: Oct 1, 2025

Item characteristics

Thread Class: 3A
Thread Direction: RIGHT-HAND
Fastener Length: INCHES MINIMUM 0.730 AND INCHES MAXIMUM 0.770
Locking Feature: THREADS PATCH OR PELLET OR STRIP
Nominal Thread Diameter: INCHES 0.500
Width Across Flats: INCHES NOMINAL 0.250
Thread Quantity Per Inch: 20
Part Name Assigned By Controlling Agency: SETSCREW, HEXAGON SOCKET FLAT POINT
Material: FASTENER STEEL COMP 4032 OR STEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8740
Material: LOCKING FEATURE PLASTIC POLYAMIDE NYLON
Surface Treatment: FASTENER CADMIUM OR CHROMATE
Thread Series Designator: UNF

About this page

An NSN is 13 digits: the 4-digit Federal Supply Class and the 9-digit NIIN. Cross-references come from the federal logistics record; demand from DLA DIBBS, SAM.gov and FPDS; ADs from the Federal Register. Refreshed nightly. Market Pulse shows the whole market.