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PartsTable / COMPONENT / FFS103ATYPE4STYLE4
FFS103ATYPE4STYLE4 ✓ 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 SETSCREW is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8740 OVERALL, point_style: CUP, spline_width: 0.022 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.188 INCHES MAXIMUM IN, fastener_length: 0.188 INCHES NOMINAL 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 5305-00-282-4546, 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
FFS103ATYPE4STYLE4
NSN: 5305-00-282-4546
FSC: 5305
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialSTEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8740 OVERALL
point_styleCUP
spline_width0.022 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
thread_class3A A
thread_length0.188 INCHES MAXIMUM IN
fastener_length0.188 INCHES NOMINAL IN
hardness_rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
internal_drive_styleCROSS RECESS TYPE 1
spline_major_diameter0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
spline_minor_diameter0.055 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN
NSN5305-00-282-4546
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: FFS103ATYPE4STYLE4 · 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
•
POINT STYLE: CUP
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
•
THREAD QUANTITY PER INCH: 32
•
SPLINE MAJOR DIAMETER: 0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.188 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
POINT STYLECUP
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
THREAD QUANTITY PER INCH32
SPLINE MAJOR DIAMETER0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
THREAD LENGTH0.188 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
SPLINE WIDTH0.022 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
482648Interchangeable
interchangeable cross-reference
interchangeable
A-1404Interchangeable
interchangeable cross-reference
interchangeable
19815M1Interchangeable
interchangeable cross-reference
interchangeable
60331Interchangeable
interchangeable cross-reference
interchangeable
50158Interchangeable
interchangeable cross-reference
interchangeable
482906-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FFS103ATYPE4STYLE4?
FFS103ATYPE4STYLE4 is a SETSCREW.
What parts can replace FFS103ATYPE4STYLE4?
There are 15 known substitutes for FFS103ATYPE4STYLE4: 482648, A-1404, 19815M1 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FFS103ATYPE4STYLE4?
FFS103ATYPE4STYLE4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-282-4546. 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