Home · NSN 01-277-0441

NSN 01-277-0441 — Screw,Cap,Hexagon Head

NIIN 01-277-0441 · unit of issue EA · AAC J (not stocked, central procurement) · source of supply SMS

NSN 01-277-0441 is the national stock number for a screw,cap,hexagon head. It cross-references to 4 manufacturer part numbers from 4 CAGE codes, including American National Standards Institute Incorporated, Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M, Federal Specifications Promulgated By General Services Administration Washington Dc; the primary is B1821BH056C056N. The unit of issue is EA and the FLIS list price is $2.09.

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.

4

part numbers from 4 CAGEs

0

open solicitations, all agencies

0

government buys in 24 months

0

sellers with confirmed stock

Watch NSN 01-277-0441: an email the morning the government solicits or buys it, or an AD names it. Free.
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Cross-references

Part numbers filed against this stock number, with the manufacturer (CAGE) and the FLIS reference codes.

Part numberCAGEManufacturerReferenceVariation
B1821BH056C056N80204American National Standards Institute Incorporated3 · Design control (vendor)2 · Fully interchangeable
MS90728-13096906Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M5 · Secondary reference9 · Reference only
FFS8581348Federal Specifications Promulgated By General Services Administration Washington DcE8
MS90725-13080205National Aerospace Standards Committee Aerospace Industries Association Of America Inc Not For Rfq Or Solicitation UseE8
MS90725-13096906Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-ME8

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 B1821BH056C056N.

Request B1821BH056C056N

No account needed. Goes to the sellers who carry this number or its family.

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

DLA management data

FLIS unit price
$2.09
Unit of issue
EA
Acquisition advice
J — Not stocked, central procurement
Source of supply
SMS
Effective
Oct 1, 2025

Item characteristics

Thread Class
2A
Thread Direction
RIGHT-HAND
Thread Length
INCHES MINIMUM 0.323 AND INCHES MAXIMUM 0.562
Fastener Length
INCHES MINIMUM 0.531 AND INCHES MAXIMUM 0.562
Head Height
INCHES MINIMUM 0.348 AND INCHES MAXIMUM 0.371
Width Between Flats
INCHES MINIMUM 0.798 AND INCHES MAXIMUM 0.812
Nominal Thread Diameter
INCHES 0.562
Thread Quantity Per Inch
12
Minimum Tensile Strength
POUNDS PER SQUARE INCH 150000
Material
OVERALL STEEL
Material Document And Classification
OVERALL ASSN STD SINGLE MATERIAL RESPONSE SAE GR 8 J429
Surface Treatment
OVERALL ZINC AND CHROMATE
Surface Treatment Document And Classification
OVERALL ASSN STD SINGLE TREATMENT RESPONSE AST- B633 TY 2 SC 3
Thread Series Designator
UNIFIED NATIONAL COARSE (UNC)

Related stock numbers

Other NSNs filed under the same part numbers.

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.

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