Home · NSN 00-438-5110

NSN 00-438-5110 — Nut,Self-Locking,Extended Washer

NIIN 00-438-5110 · unit of issue EA · AAC H (not stocked, central procurement (dispute)) · source of supply SMS

NSN 00-438-5110 is the national stock number for a nut,self-locking,extended washer. It cross-references to 1 manufacturer part number from 4 CAGE codes, including Sikorsky Aircraft Corporation, Bristol Industries, LLC, National Aerospace Standards Committee Aerospace Industries Association Of America Inc Not For Rfq Or Solicitation Use; the primary is NAS1291C8. The unit of issue is EA and the FLIS list price is $5.03.

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 4 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
NAS1291C8	78286	Sikorsky Aircraft Corporation	3 · Design control (vendor)	2 · Fully interchangeable
NAS1291C8	27238	Bristol Industries, LLC	5 · Secondary reference	2 · Fully interchangeable
NAS1291C8	80205	National Aerospace Standards Committee Aerospace Industries Association Of America Inc Not For Rfq Or Solicitation Use	5 · Secondary reference	9 · Reference only
NAS1291C8	019L2	Esna, LLC	5 · Secondary reference	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 NAS1291C8.

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

DLA management data

FLIS unit price: $5.03
Unit of issue: EA
Acquisition advice: H — Not stocked, central procurement (dispute)
Source of supply: SMS
Effective: Oct 1, 2026

Item characteristics

Thread Class: 3B
Thread Direction: RIGHT-HAND
Locking Feature: PREVAILING TORQUE ALL METAL DESIGN
Washer Outside Diameter: INCHES MAXIMUM 0.814
Overall Height: INCHES MINIMUM 0.350 AND INCHES MAXIMUM 0.410
Washer Thickness: INCHES MINIMUM 0.040
Width Across Flats: INCHES MINIMUM 0.556 AND INCHES MAXIMUM 0.566
Temp Rating: FAHRENHEIT NOMINAL 800.0
Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF)
Thread Quantity Per Inch: 20
Nominal Thread Size: INCHES 0.500
Countersink Angle: NUT DEGREES NOMINAL 120.0
Material: OVERALL IRON ALLOY 660
Material Document And Classification: OVERALL ASSN STD SINGLE MATERIAL RESPONSE A-S 5732 OR ASSN STD SINGLE MATERIAL RESPONSE A-S 5737 OR ASSN STD SINGLE MATERIAL RESPONSE A-S 5525
Precious Material And Location: SILVER EXTERNAL SURFACE
Surface Treatment: OVERALL SILVER
Surface Treatment Document And Classification: OVERALL ASSN STD SINGLE TREATMENT RESPONSE A-S 2410

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.