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PartsTable / COMPONENT / FF-S-86E TY I
FF-S-86E TY I ✓ 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,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL, head_style: FLAT CHAMFER, head_height: 0.159 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.262 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN, thread_length: 0.475 INCHES MINIMUM 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 5305-00-297-7962, 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-86E TY I
NSN: 5305-00-297-7962
FSC: 5305
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL
head_styleFLAT CHAMFER
head_height0.159 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.262 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
thread_length0.475 INCHES MINIMUM IN
fastener_length0.500 INCHES NOMINAL IN
hardness_rating80.0 ROCKWELL B MINIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.125 INCHES NOMINAL IN
internal_drive_styleHEXAGON
NSN5305-00-297-7962
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: FF-S-86E TY I · 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
•
MATERIAL: STEEL COMP 4037 OVERALL
•
HEAD DIAMETER: 0.270 INCHES NOMINAL IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
HARDNESS RATING: 38.0 ROCKWELL C NOMINAL OVERALL
•
THREAD LENGTH: 0.375 INCHES MAXIMUM IN
•
THREAD QUANTITY PER INCH: 32
•
WIDTH ACROSS FLATS: 0.127 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.164 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 4037 OVERALL
HEAD DIAMETER0.270 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
HARDNESS RATING38.0 ROCKWELL C NOMINAL OVERALL
THREAD LENGTH0.375 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH32
WIDTH ACROSS FLATS0.127 INCHES NOMINAL IN
HEAD HEIGHT0.164 INCHES NOMINAL IN
SURFACE TREATMENTPHOSPHATE OVERALL
INTERNAL DRIVE STYLEHEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
17860PInterchangeable
interchangeable cross-reference
interchangeable
SK-166802Interchangeable
interchangeable cross-reference
interchangeable
SMS-4320-069-9048Interchangeable
interchangeable cross-reference
interchangeable
100105-2Interchangeable
interchangeable cross-reference
interchangeable
7058773P3Interchangeable
interchangeable cross-reference
interchangeable
3-16STAINLESSSTEELBALLGRADE1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FF-S-86E TY I?
FF-S-86E TY I is a SCREW,CAP,SOCKET HEAD.
What parts can replace FF-S-86E TY I?
There are 24 known substitutes for FF-S-86E TY I: 17860P, SK-166802, SMS-4320-069-9048 and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FF-S-86E TY I?
FF-S-86E TY I is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-297-7962. 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