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PartsTable / COMPONENT / FFB571ATYPEA2
FFB571ATYPEA2 ✓ 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,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, head_style: SQUARE, nut_height: 0.295 INCHES MINIMUM AND 0.331 INCHES MAXIMUM IN, grip_length: 5.250 INCHES NOMINAL IN, head_height: 0.171 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-207-3278, 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
FFB571ATYPEA2
NSN: 5306-00-207-3278
FSC: 5306
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
head_styleSQUARE
nut_height0.295 INCHES MINIMUM AND 0.331 INCHES MAXIMUM IN
grip_length5.250 INCHES NOMINAL IN
head_height0.171 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
thread_class3B
thread_length2.000 INCHES MINIMUM IN
thread_seriesUNF
fastener_length1.250 INCHES NOMINAL IN
special_featuresFURNISHED W/ONE SQ NUT
thread_directionRIGHT-HAND
NSN5306-00-207-3278
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: FFB571ATYPEA2 · 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
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
HEAD STYLE: SQUARE
•
MINIMUM TENSILE STRENGTH: 48000 POUNDS PER SQUARE INCH LBS
•
FASTENER LENGTH: 6.500 INCHES NOMINAL IN
•
THREAD LENGTH: 1.250 INCHES MINIMUM IN
•
WIDTH BETWEEN FLATS: 0.725 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
FEATURES PROVIDED: FINISHED HEAD
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD DIAMETER0.500 INCHES IN
HEAD STYLESQUARE
MINIMUM TENSILE STRENGTH48000 POUNDS PER SQUARE INCH LBS
FASTENER LENGTH6.500 INCHES NOMINAL IN
THREAD LENGTH1.250 INCHES MINIMUM IN
WIDTH BETWEEN FLATS0.725 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
FEATURES PROVIDEDFINISHED HEAD
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
NONDEFINITIVE SPEC/STD DATAA2 TYPE
VERIFIED SUBSTITUTES & CROSS-REFERENCES

No verified substitutes available.

LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FFB571ATYPEA2?
FFB571ATYPEA2 is a BOLT,MACHINE.
What is the NSN for FFB571ATYPEA2?
FFB571ATYPEA2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-207-3278. 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