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Technical Data Sheet
PartsTable / COMPONENT / FF-S-85 TY 2 ST 10P GR 2
FF-S-85 TY 2 ST 10P GR 2 ✓ 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 SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 1.018 INCHES MINIMUM AND 1.270 INCHES MAXIMUM IN, fastener_length: 1.210 INCHES MINIMUM AND 1.270 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-099-8973, 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-S-85 TY 2 ST 10P GR 2
NSN: 5305-01-099-8973
FSC: 5305
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN
thread_class3A A
thread_length1.018 INCHES MINIMUM AND 1.270 INCHES MAXIMUM IN
fastener_length1.210 INCHES MINIMUM AND 1.270 INCHES MAXIMUM IN
hardness_rating23.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentZINC AND CHROMATE OVERALL
width_between_flats0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
minimum_yield_strength90000 POUNDS PER SQUARE INCH LBS
nominal_thread_diameter0.500 INCHES IN
NSN5305-01-099-8973
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: FF-S-85 TY 2 ST 10P GR 2 · 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: 1.210 INCHES MINIMUM AND 1.270 INCHES MAXIMUM IN
•
SURFACE TREATMENT: ZINC AND CHROMATE OVERALL
•
DEPARTURE FROM CITED DOCUMENT: AS MODIFIED BY SURFACE FINISH
•
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 5 GRADE
•
HARDNESS RATING: 23.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
•
MINIMUM YIELD STRENGTH: 90000 POUNDS PER SQUARE INCH LBS
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B633 TY 2 CL FE/ZN 13 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS (FLIS)
FASTENER LENGTH1.210 INCHES MINIMUM AND 1.270 INCHES MAXIMUM IN
SURFACE TREATMENTZINC AND CHROMATE OVERALL
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY SURFACE FINISH
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 5 GRADE
HARDNESS RATING23.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM YIELD STRENGTH90000 POUNDS PER SQUARE INCH LBS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B633 TY 2 CL FE/ZN 13 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD ALL MATERIAL RESPONSES OVERALL
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
M1222B2X7C272GFNNInterchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-1222 TY 1 GR 5Interchangeable
interchangeable cross-reference
interchangeable
FFB571TYPEA7Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-1222/TY1GR5Interchangeable
interchangeable cross-reference
interchangeable
5361662 ITEM 34Interchangeable
Same NIIN cross-reference
interchangeable
MIL-S-001222Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FF-S-85 TY 2 ST 10P GR 2?
FF-S-85 TY 2 ST 10P GR 2 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace FF-S-85 TY 2 ST 10P GR 2?
There are 6 known substitutes for FF-S-85 TY 2 ST 10P GR 2: M1222B2X7C272GFNN, MIL-DTL-1222 TY 1 GR 5, FFB571TYPEA7 and 3 more. Substitute compatibility should be verified for your specific system.
Is FF-S-85 TY 2 ST 10P GR 2 still available?
FF-S-85 TY 2 ST 10P GR 2 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