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Technical Data Sheet
PartsTable / COMPONENT / 3/8-16UNC-2A X 1 INCH
3/8-16UNC-2A X 1 INCH ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The 3/8-16UNC-2A X 1 INCH is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-302-5223, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
3/8-16UNC-2A X 1 INCH
NSN: 5305-01-302-5223
FSC: 5305
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part Number3/8-16UNC-2A X 1 INCH
NSN5305-01-302-5223
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3/8-16UNC-2A X 1 INCH · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281,CLA FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 1 TYPE
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
HEAD STYLE: HEXAGON
•
DEPARTURE FROM CITED DOCUMENT: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
•
THREAD QUANTITY PER INCH: 16
•
CRITICALITY CODE JUSTIFICATION: ZZZW
•
WIDTH BETWEEN FLATS: 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281,CLA FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NONDEFINITIVE SPEC/STD DATA1 TYPE
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
HEAD STYLEHEXAGON
DEPARTURE FROM CITED DOCUMENTMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
THREAD QUANTITY PER INCH16
CRITICALITY CODE JUSTIFICATIONZZZW
WIDTH BETWEEN FLATS0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
FASTENER LENGTH1.000 INCHES NOMINAL IN
MATERIALNICKEL ALLOY OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
MIL-DTL-1222 TYPE1Interchangeable
interchangeable cross-reference
interchangeable
A040Interchangeable
interchangeable cross-reference
interchangeable
R506REVAPC26Interchangeable
interchangeable cross-reference
interchangeable
7/8-9UNC-2A X 4IN CLASS A TYPL1Interchangeable
interchangeable cross-reference
interchangeable
MS35311-217Interchangeable
interchangeable cross-reference
interchangeable
MS35311-217L1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3/8-16UNC-2A X 1 INCH?
3/8-16UNC-2A X 1 INCH is a 3/8-16UNC-2A X 1 INCH.
What parts can replace 3/8-16UNC-2A X 1 INCH?
There are 29 known substitutes for 3/8-16UNC-2A X 1 INCH: MIL-DTL-1222 TYPE1, A040, R506REVAPC26 and 26 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3/8-16UNC-2A X 1 INCH?
3/8-16UNC-2A X 1 INCH is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-302-5223. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026