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PartsTable / COMPONENT / FFB571TYPEC
FFB571TYPEC ✓ 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 BOLT,SQUARE NECK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: BUTTON, neck_width: 0.300 INCHES MINIMUM AND 0.326 INCHES MAXIMUM IN, head_height: 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN, neck_length: 0.250 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN, thread_class: 2A A. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-207-8137, 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
FFB571TYPEC
NSN: 5306-00-207-8137
FSC: 5306
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleBUTTON
neck_width0.300 INCHES MINIMUM AND 0.326 INCHES MAXIMUM IN
head_height0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN
neck_length0.250 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.803 INCHES MINIMUM AND 0.823 INCHES MAXIMUM IN
thread_length0.625 INCHES MINIMUM IN
fastener_length0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
special_featuresONE SQ NUT
thread_directionRIGHT-HAND
nominal_thread_diameter0.375 INCHES IN
NSN5306-00-207-8137
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: FFB571TYPEC · 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
•
FASTENER LENGTH: 1.219 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.625 INCHES MINIMUM IN
•
THREAD CLASS: 2A A
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
NECK LENGTH: 0.250 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
THREAD QUANTITY PER INCH: 16
TECHNICAL CHARACTERISTICS (FLIS)
FASTENER LENGTH1.219 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN
THREAD LENGTH0.625 INCHES MINIMUM IN
THREAD CLASS2A A
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
NECK LENGTH0.250 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
THREAD QUANTITY PER INCH16
SPECIAL FEATURESFURNISHED WITH SQUARE NUT
HEAD HEIGHT0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
70-6-12Upgraded Successor
successor cross-reference
successor
70316Interchangeable
interchangeable cross-reference
interchangeable
FFB571TYPECInterchangeable
interchangeable cross-reference
interchangeable
70-5-6Interchangeable
interchangeable cross-reference
interchangeable
2752-2Interchangeable
interchangeable cross-reference
interchangeable
990355-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FFB571TYPEC?
FFB571TYPEC is a BOLT,SQUARE NECK.
What parts can replace FFB571TYPEC?
There are 7 known substitutes for FFB571TYPEC: 70-6-12, 70316, FFB571TYPEC and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FFB571TYPEC?
FFB571TYPEC is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-207-8137. 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