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Technical Data Sheet
PartsTable / COMPONENT / 9524621
9524621 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, hole_diameter: 0.505 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN, hardness_rating: 27.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM, outside_diameter: 0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM IN, style_designator: RECESSED BOTH SIDES, top_recess_angle: 90.0 DEGREES NOMINAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-797-7708, 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
9524621
NSN: 5310-00-797-7708
FSC: 5310
CAGE: 73842 — GOODYEAR TIRE AND RUBBER CO THE (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
hole_diameter0.505 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
hardness_rating27.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM
outside_diameter0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM IN
style_designatorRECESSED BOTH SIDES
top_recess_angle90.0 DEGREES NOMINAL
surface_treatmentCADMIUM AND CHROMATE OVERALL
material_thickness0.151 INCHES MINIMUM AND 0.161 INCHES MAXIMUM IN
bottom_recess_angle90.0 DEGREES NOMINAL
top_recess_diameter0.608 INCHES MINIMUM AND 0.618 INCHES MAXIMUM IN
bottom_recess_diameter0.608 INCHES MINIMUM AND 0.618 INCHES MAXIMUM IN
minimum_tensile_strength126000 POUNDS PER SQUARE INCH LBS
NSN5310-00-797-7708
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 9524621 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL THICKNESS: 0.151 INCHES MINIMUM AND 0.161 INCHES MAXIMUM IN
•
TOP RECESS DIAMETER: 0.608 INCHES MINIMUM AND 0.618 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-18729 COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 4130 OVERALL
•
HOLE DIAMETER: 0.505 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
•
MINIMUM TENSILE STRENGTH: 126000 POUNDS PER SQUARE INCH LBS
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.151 INCHES MINIMUM AND 0.161 INCHES MAXIMUM IN
TOP RECESS DIAMETER0.608 INCHES MINIMUM AND 0.618 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-18729 COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 4130 OVERALL
HOLE DIAMETER0.505 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
MINIMUM TENSILE STRENGTH126000 POUNDS PER SQUARE INCH LBS
TOP RECESS ANGLE90.0 DEGREES NOMINAL
HARDNESS RATING27.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
00804Interchangeable
interchangeable cross-reference
interchangeable
NGC875CAR-0N6S020Interchangeable
interchangeable cross-reference
interchangeable
NGC875CARInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 9524621?
9524621 is a WASHER,RECESSED.
What parts can replace 9524621?
There are 3 known substitutes for 9524621: 00804, NGC875CAR-0N6S020, NGC875CAR. Substitute compatibility should be verified for your specific system.
What is the NSN for 9524621?
9524621 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-797-7708. 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