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Technical Data Sheet
PartsTable / COMPONENT / FRB-7500-8-B-4
FRB-7500-8-B-4 ✓ 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 ASSEMBLY,PANEL is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061 HEAD, head_style: KNURLED NO. 4, head_height: 0.480 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.405 INCHES MINIMUM AND 0.435 INCHES MAXIMUM IN, thread_length: 0.483 INCHES MINIMUM AND 0.647 INCHES MAXIMUM 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 5305-00-003-9474, 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
FRB-7500-8-B-4
NSN: 5305-00-003-9474
FSC: 5305
CAGE: 0HDW7 — HUCK INTERNATIONAL, INC. DIV HUCK PRODUCTS DIVISION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 HEAD
head_styleKNURLED NO. 4
head_height0.480 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.405 INCHES MINIMUM AND 0.435 INCHES MAXIMUM IN
thread_length0.483 INCHES MINIMUM AND 0.647 INCHES MAXIMUM IN
fastener_length0.535 INCHES MINIMUM AND 0.605 INCHES MAXIMUM IN
special_featuresSTRAIGHT KNURL
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE FASTENER
internal_drive_styleSLOT
end_item_identificationMILSTAR SYSTEM;NIMITZ CLASS CVN;OLIVER PERRY
NSN5305-00-003-9474
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: FRB-7500-8-B-4 · 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 CLASS: 3A A
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625,TY 1,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE STAND-OFF
•
MATERIAL: STEEL COMP 302 FASTENER
•
SURFACE TREATMENT: ANODIZE HEAD
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3A A
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TY 1,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE STAND-OFF
MATERIALSTEEL COMP 302 FASTENER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SPRING
MATERIALSTEEL COMP 302 SPRING
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TY 1,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE HEAD
SURFACE TREATMENTANODIZE HEAD
MATERIALALUMINUM ALLOY 6061 HEAD
SURFACE TREATMENTPASSIVATE SPRING
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
481106-58Interchangeable
interchangeable cross-reference
interchangeable
FRB75000-8B4Interchangeable
interchangeable cross-reference
interchangeable
465508-05Interchangeable
interchangeable cross-reference
interchangeable
8320011565Interchangeable
Same NIIN cross-reference
interchangeable
FBR75008B4Interchangeable
Same NIIN cross-reference
interchangeable
B320011565Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FRB-7500-8-B-4?
FRB-7500-8-B-4 is a SCREW ASSEMBLY,PANEL.
What parts can replace FRB-7500-8-B-4?
There are 6 known substitutes for FRB-7500-8-B-4: 481106-58, FRB75000-8B4, 465508-05 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FRB-7500-8-B-4?
FRB-7500-8-B-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-003-9474. 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