Home · NSN 01-137-7049

NSN 01-137-7049 — Bolt,Close Tolerance

NIIN 01-137-7049 · unit of issue EA · AAC J (not stocked, central procurement) · source of supply SMS

NSN 01-137-7049 is the national stock number for a bolt,close tolerance. It cross-references to 2 manufacturer part numbers from 3 CAGE codes, including Aeronautical Standards Group Dept Of Navy And Air Force, Zf Industrieantriebe Witten Gmbh, Air Force-Navy Aeronautical Specifications Promulgated By Aeronautical Standards Group; the primary is AN176C25A. The unit of issue is EA and the FLIS list price is $13.00.

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 numbers from 3 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
AN176C25A	88044	Aeronautical Standards Group Dept Of Navy And Air Force	2 · Item ident. reference	2 · Fully interchangeable
AN176C25A	D9182	Zf Industrieantriebe Witten Gmbh	C	1 · Not fully interchangeable
SN176C25A	81352	Air Force-Navy Aeronautical Specifications Promulgated By Aeronautical Standards Group	C	1 · Not 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 AN176C25A.

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

DLA management data

FLIS unit price: $13.00
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
Thread Length: INCHES MINIMUM 0.610 AND INCHES MAXIMUM 0.687
Fastener Length: INCHES MINIMUM 2.687 AND INCHES MAXIMUM 2.734
Head Height: INCHES MINIMUM 0.203 AND INCHES MAXIMUM 0.235
Width Between Flats: INCHES MINIMUM 0.553 AND INCHES MAXIMUM 0.565
Grip Diameter: INCHES MINIMUM 0.3737 AND INCHES MAXIMUM 0.3742
Nominal Thread Diameter: INCHES 0.375
Grip Length: INCHES MINIMUM 2.047 AND INCHES MAXIMUM 2.077
Thread Quantity Per Inch: 24
Minimum Tensile Strength: POUNDS PER SQUARE INCH 125000
Hardness Rating: OVERALL ROCKWELL C MINIMUM 26.0 AND ROCKWELL C MAXIMUM 32.0
Surface Finish: BEARING SURFACE OF HEAD MICROINCHES 63.0
Surface Finish: THREADS MICROINCHES 63.0
Material: OVERALL STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037
Surface Treatment: OVERALL PASSIVATE
Surface Treatment Document And Classification: OVERALL FED SPEC SINGLE TREATMENT RESPONSE QQ--35
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.