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Technical Data Sheet
PartsTable / COMPONENT / B-1.101
B-1.101 ✓ 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 B-1.101 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 5305-01-122-0254, 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
B-1.101
NSN: 5305-01-122-0254
FSC: 5305
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
Part NumberB-1.101
NSN5305-01-122-0254
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: B-1.101 · 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
•
WIDTH BETWEEN FLATS: 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
MATERIAL: STEEL OVERALL
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
MATERIAL DOCUMENT AND CLASSIFICATION: G-4435-M,CAGE 24617 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
THREAD QUANTITY PER INCH: 18
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH BETWEEN FLATS0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD DIAMETER0.312 INCHES IN
MATERIALSTEEL OVERALL
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
MATERIAL DOCUMENT AND CLASSIFICATIONG-4435-M,CAGE 24617 MFR REF SINGLE MATERIAL RESPONSE OVERALL
THREAD QUANTITY PER INCH18
FASTENER LENGTH4.250 INCHES NOMINAL IN
THREAD CLASS2A A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
B1104Interchangeable
interchangeable cross-reference
interchangeable
MODEL300SMInterchangeable
interchangeable cross-reference
interchangeable
B1102Interchangeable
interchangeable cross-reference
interchangeable
217909Interchangeable
interchangeable cross-reference
interchangeable
10067Interchangeable
interchangeable cross-reference
interchangeable
10AA25WMInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B-1.101?
B-1.101 is a B-1.101.
What parts can replace B-1.101?
There are 25 known substitutes for B-1.101: B1104, MODEL300SM, B1102 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B-1.101?
B-1.101 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-122-0254. 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