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PartsTable / COMPONENT / FRSS7500-8-B-4
FRSS7500-8-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: STEEL COMP 302 SPRING, head_style: FLAT CHAMFER, head_height: 0.495 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.420 INCHES NOMINAL IN, thread_length: 0.550 INCHES MINIMUM AND 0.590 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 5305-00-162-0377, 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
FRSS7500-8-B-4
NSN: 5305-00-162-0377
FSC: 5305
CAGE: 0HDW7 — HUCK INTERNATIONAL, INC. DIV HUCK PRODUCTS DIVISION (USA)
SPECIFICATIONS
materialSTEEL COMP 302 SPRING
head_styleFLAT CHAMFER
head_height0.495 INCHES NOMINAL IN
thread_class2A A
head_diameter0.420 INCHES NOMINAL IN
thread_length0.550 INCHES MINIMUM AND 0.590 INCHES MAXIMUM IN
fastener_length1.045 INCHES MINIMUM AND 1.085 INCHES MAXIMUM IN
special_featuresSTRAIGHT KNURLED
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE PRIMARY WASHER
end_item_identificationPATRIOT MISSILE
nominal_thread_diameter0.164 INCHES IN
NSN5305-00-162-0377
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: FRSS7500-8-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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE PRIMARY WASHER
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
SURFACE TREATMENT: PASSIVATE PRIMARY WASHER
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-W-423 COND B FED SPEC SINGLE MATERIAL RESPONSE SPRING
•
MATERIAL: ALUMINUM ALLOY 6061 STAND-OFF
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE PRIMARY WASHER
NOMINAL THREAD DIAMETER0.164 INCHES IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SPRING
SURFACE TREATMENTPASSIVATE PRIMARY WASHER
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-W-423 COND B FED SPEC SINGLE MATERIAL RESPONSE SPRING
MATERIALALUMINUM ALLOY 6061 STAND-OFF
SURFACE TREATMENTPASSIVATE SPRING
MATERIALSTEEL COMP 302 SPRING
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE STAND-OFF
MATERIALSTEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 384 OR STEEL COMP 385 FASTENER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
FRB7500-8-B-4Interchangeable
interchangeable cross-reference
interchangeable
8320011565Interchangeable
interchangeable cross-reference
interchangeable
FBR75008B4Interchangeable
interchangeable cross-reference
interchangeable
FRSS7500-8-B-4DLInterchangeable
interchangeable cross-reference
interchangeable
FT1300-8-2-4DLInterchangeable
interchangeable cross-reference
interchangeable
FRSS7500-8-B-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FRSS7500-8-B-4?
FRSS7500-8-B-4 is a SCREW ASSEMBLY,PANEL.
What parts can replace FRSS7500-8-B-4?
There are 10 known substitutes for FRSS7500-8-B-4: FRB7500-8-B-4, 8320011565, FBR75008B4 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FRSS7500-8-B-4?
FRSS7500-8-B-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-162-0377. This indicates validated use in U.S. government and defense supply chains.
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Last verified: July 2026