Home · NSN 01-438-8280

NSN 01-438-8280 — Screw,Close Tolerance

NIIN 01-438-8280 · unit of issue EA · AAC Z (insurance item) · source of supply SMS

NSN 01-438-8280 is the national stock number for a screw,close tolerance. It cross-references to 1 manufacturer part number from 1 CAGE code, including National Aerospace Standards Committee Aerospace Industries Association Of America Inc Not For Rfq Or Solicitation Use; the primary is NAS1581A4R24. The unit of issue is EA and the FLIS list price is $32.09.

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 1 CAGE

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
NAS1581A4R24	80205	National Aerospace Standards Committee Aerospace Industries Association Of America Inc Not For Rfq Or Solicitation Use	3 · Design control (vendor)	2 · Fully interchangeable

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 NAS1581A4R24.

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

DLA management data

FLIS unit price: $32.09
Unit of issue: EA
Acquisition advice: Z — Insurance item
Source of supply: SMS
Effective: May 1, 2026

Item characteristics

Thread Class: 3A
Thread Direction: RIGHT-HAND
Thread Length: INCHES MINIMUM 0.378 AND INCHES MAXIMUM 0.428
Fastener Length: INCHES MINIMUM 1.888 AND INCHES MAXIMUM 1.918
Head Diameter: INCHES NOMINAL 0.399
Grip Diameter: INCHES MINIMUM 0.2490 AND INCHES MAXIMUM 0.2495
Nominal Thread Diameter: INCHES 0.250
Grip Length: INCHES MINIMUM 1.490 AND INCHES MAXIMUM 1.510
Thread Quantity Per Inch: 28
Countersink Angle: DEGREES MINIMUM 99.0 AND DEGREES MAXIMUM 101.0
Material: OVERALL STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 8740
Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF)

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.