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PartsTable / COMPONENT / FF-B-575 TY1GR1
FF-B-575 TY1GR1 ✓ 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, head_style: SQUARE, head_height: 0.400 INCHES MINIMUM AND 0.444 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 1.212 INCHES MINIMUM AND 1.540 INCHES MAXIMUM IN, fastener_length: 1.440 INCHES MINIMUM AND 1.540 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-959-7818, 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
FF-B-575 TY1GR1
NSN: 5306-00-959-7818
FSC: 5306
CAGE: 80244 — GENERAL SERVICES ADMINISTRATION FEDERAL SUPPLY SERVICE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleSQUARE
head_height0.400 INCHES MINIMUM AND 0.444 INCHES MAXIMUM IN
thread_class2A A
thread_length1.212 INCHES MINIMUM AND 1.540 INCHES MAXIMUM IN
fastener_length1.440 INCHES MINIMUM AND 1.540 INCHES MAXIMUM IN
hardness_rating70.0 ROCKWELL B MINIMUM AND 100.0 ROCKWELL B MAXIMUM OVERALL
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
surface_treatmentZINC OVERALL
width_between_flats0.906 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN
nominal_thread_diameter0.625 INCHES IN
NSN5306-00-959-7818
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: FF-B-575 TY1GR1 · 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
•
THREAD QUANTITY PER INCH: 11
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
THREAD LENGTH: 1.212 INCHES MINIMUM AND 1.540 INCHES MAXIMUM IN
•
THREAD CLASS: 2A A
•
MINIMUM TENSILE STRENGTH: 60000 POUNDS PER SQUARE INCH LBS
•
FEATURES PROVIDED: FINISHED HEAD
•
WIDTH BETWEEN FLATS: 0.906 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH11
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD LENGTH1.212 INCHES MINIMUM AND 1.540 INCHES MAXIMUM IN
THREAD CLASS2A A
MINIMUM TENSILE STRENGTH60000 POUNDS PER SQUARE INCH LBS
FEATURES PROVIDEDFINISHED HEAD
WIDTH BETWEEN FLATS0.906 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.625 INCHES IN
HEAD STYLESQUARE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
111195Upgraded Successor
successor cross-reference
successor
FF-B-575Upgraded Successor
successor cross-reference
successor
V80AUpgraded Successor
successor cross-reference
successor
1103024Upgraded Successor
successor cross-reference
successor
0904935-4Upgraded Successor
successor cross-reference
successor
MS35355-127Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FF-B-575 TY1GR1?
FF-B-575 TY1GR1 is a BOLT,MACHINE.
What parts can replace FF-B-575 TY1GR1?
There are 26 known substitutes for FF-B-575 TY1GR1: 111195, FF-B-575, V80A and 23 more. Substitute compatibility should be verified for your specific system.
Is FF-B-575 TY1GR1 still available?
FF-B-575 TY1GR1 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026