Home · NSN 00-275-9558

NSN 00-275-9558 — Bolt,Close Tolerance

NIIN 00-275-9558 · unit of issue PG · AAC J (not stocked, central procurement) · source of supply SMS

NSN 00-275-9558 is the national stock number for a bolt,close tolerance. It cross-references to 2 manufacturer part numbers from 2 CAGE codes, including Aeronautical Standards Group Dept Of Navy And Air Force, Department Of The Air Force; the primary is 88T20. The unit of issue is PG and the FLIS list price is $155.38.

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 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
AN178H20	88044	Aeronautical Standards Group Dept Of Navy And Air Force	2 · Item ident. reference	2 · Fully interchangeable
88T20	80049	Department Of The Air Force	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 88T20.

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

DLA management data

FLIS unit price: $155.38
Unit of issue: PG
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 0.750 AND INCHES MAXIMUM 0.829
Fastener Length: INCHES MINIMUM 2.078 AND INCHES MAXIMUM 2.125
Head Height: INCHES MINIMUM 0.265 AND INCHES MAXIMUM 0.297
Width Between Flats: INCHES MINIMUM 0.740 AND INCHES MAXIMUM 0.752
Hole Diameter: INCHES NOMINAL 0.070
Grip Diameter: INCHES MINIMUM 0.4986 AND INCHES MAXIMUM 0.4991
Shank Unthreaded Hole Diameter: FIRST HOLE INCHES MINIMUM 0.106 AND INCHES MAXIMUM 0.116
Nominal Thread Diameter: INCHES 0.500
Grip Length: INCHES MINIMUM 1.296 AND INCHES MAXIMUM 1.328
Hole Quantity: 1
Hole Type: DRILLED
Thread Quantity Per Inch: 20
Minimum Tensile Strength: POUNDS PER SQUARE INCH 125000
Hardness Rating: OVERALL ROCKWELL C MINIMUM 26.0 AND ROCKWELL C MAXIMUM 32.0
Distance From Head Largest Bearing Surface To Shank Hole Center: FIRST HOLE INCHES MINIMUM 1.905 AND INCHES MAXIMUM 1.937
Surface Finish: GRIP MICROINCHES 63.0
Surface Finish: BEARING SURFACE OF HEAD MICROINCHES 63.0
Material: OVERALL STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4037 OR STEEL COMP 4140 OR STEEL COMP 4130
Material Document And Classification: OVERALL MIL SPEC 1ST MATERIAL RESPONSE -IL-S-6049 OR MIL SPEC 2ND MATERIAL RESPONSE -IL-S-6050 OR MIL SPEC 3RD MATERIAL RESPONSE -IL-S-6098 OR ASSN STD 4TH MATERIAL RESPONSE A-S 6300 OR MIL S
Surface Treatment: OVERALL CADMIUM AND CHROMATE
Surface Treatment Document And Classification: OVERALL FED SPEC SINGLE TREATMENT RESPONSE QQ--416,TYE 2,CLASS 3
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.