Home · NSN 01-689-1940

NSN 01-689-1940 — Screw,Close Tolerance

NIIN 01-689-1940 · unit of issue EA · AAC J (not stocked, central procurement) · source of supply SMS

Used on: F-16 Fighting Falcon · all platforms

NSN 01-689-1940 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 NAS1581F4T16X. The federal catalog ties it to the F-16 Fighting Falcon. The unit of issue is EA and the FLIS list price is $26.04.

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
NAS1581F4T16X	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 NAS1581F4T16X.

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

DLA management data

FLIS unit price: $26.04
Unit of issue: EA
Acquisition advice: J — Not stocked, central procurement
Source of supply: SMS
Effective: Jun 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 1.388 AND INCHES MAXIMUM 1.418
Head Diameter: INCHES MINIMUM 0.350 AND INCHES MAXIMUM 0.399
Grip Diameter: INCHES MINIMUM 0.2646 AND INCHES MAXIMUM 0.2651
End Item Identification: F16
Nominal Thread Diameter: INCHES 0.250
Grip Length: INCHES MINIMUM 0.990 AND INCHES MAXIMUM 1.010
Thread Quantity Per Inch: 28
Minimum Tensile Strength: POUNDS PER SQUARE INCH 160000
Countersink Angle: DEGREES MINIMUM 99.0 AND DEGREES MAXIMUM 101.0
Surface Finish: BEARING SURFACE OF HEAD MICROINCHES 63.0
Surface Finish: GRIP MICROINCHES 32.0
Surface Finish: THREADS MICROINCHES 32.0
Part Name Assigned By Controlling Agency: BOLT, SHEAR
Material: OVERALL STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 8740
Material Document And Classification: OVERALL MIL SPEC 1ST MATERIAL RESPONSE -IL-S-5626 OR MIL SPEC 2ND MATERIAL RESPONSE -IL-S-5000 OR MIL SPEC 3RD MATERIAL RESPONSE -IL-S-6049
Surface Treatment: OVERALL CADMIUM AND CHROMATE
Surface Treatment Document And Classification: OVERALL FED SPEC SINGLE TREATMENT RESPONSE QQ--416 TY 2 CL 2
Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF)
Specification/Standard Data: PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD 80205-NAS1581

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.