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FF-S-103 — SETSCREW

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

FF-S-103: SETSCREW.

The SETSCREW is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, head_style: HEADLESS (SETSCREW), head_height: 0.361 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN, point_style: CUP, spline_width: 0.015 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN, thread_class: 2A A. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-011-4489, 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-103
NSN: 5305-00-011-4489
NIINs: 000114489, 000223088, 000473896, 000545471, 000545472, 000545473, 000545474, 000568485, 000575238, 001740630, 002062143, 002065957, 002074417, 002257569, 002726309, 002811746, 002811749, 002927791, 002977905, 003042567, 003334264, 003334268, 005148934, 005458458, 005458466, 005584271, 005791233, 005795304, 006388744, 006559994, 007274791, 008007261, 008080899, 013614252, 015064675
FSC: 5305 — Screws
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
head_styleHEADLESS (SETSCREW)
head_height0.361 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN
point_styleCUP
spline_width0.015 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN
thread_class2A A
thread_length0.250 INCHES NOMINAL IN
fastener_length0.250 INCHES NOMINAL IN
hardness_rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
special_featuresSOCKET DRIVE,0.0500 IN. MIN,0.0510 IN. MAX W BETWEEN FLATS; 3/16 IN. 1.010 LG IN
thread_directionRIGHT-HAND
features_providedCASEHARDENED
NSN5305-00-011-4489
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: FF-S-103 · 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
•
HEAD HEIGHT: 0.281 INCHES NOMINAL IN
•
FASTENER LENGTH: 2.250 INCHES NOMINAL IN
•
THREAD LENGTH: 2.250 INCHES MAXIMUM IN
•
HARDNESS RATING: 30.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
FEATURES PROVIDED: CASEHARDENED
•
HEAD STYLE: SQUARE
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.281 INCHES NOMINAL IN
FASTENER LENGTH2.250 INCHES NOMINAL IN
THREAD LENGTH2.250 INCHES MAXIMUM IN
HARDNESS RATING30.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
FEATURES PROVIDEDCASEHARDENED
HEAD STYLESQUARE
THREAD DIRECTIONRIGHT-HAND
POINT STYLEOVAL
SUBSTITUTES & CROSS-REFERENCES 5
114489Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
86221Reference document
Same NSN cross-reference
Reference document — Secondary reference
FF-S-210Reference document
Same NSN cross-reference
Reference document — Identification reference
2651Reference document
Same NSN cross-reference
Reference document — Secondary reference
6562Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is FF-S-103?
FF-S-103 is a SETSCREW.
What parts can replace FF-S-103?
There are 5 known substitutes for FF-S-103: 114489, 86221, FF-S-210 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FF-S-103?
FF-S-103 is cataloged in the U.S. Government catalog under NSN 5305-00-011-4489. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.