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Technical Data Sheet
PartsTable / COMPONENT / R21247
R21247 ✓ 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 1009 OVERALL, recess_depth: 0.188 INCHES NOMINAL IN, hole_diameter: 0.625 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN, overall_height: 0.203 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN, outside_diameter: 1.078 INCHES MINIMUM AND 1.109 INCHES MAXIMUM IN, style_designator: RECESSED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-595-7071, 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
R21247
NSN: 5310-00-595-7071
FSC: 5310
CAGE: 83120 — PRESSED METALS OF AMERICA INC (USA)
SPECIFICATIONS
materialSTEEL COMP 1009 OVERALL
recess_depth0.188 INCHES NOMINAL IN
hole_diameter0.625 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
overall_height0.203 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
outside_diameter1.078 INCHES MINIMUM AND 1.109 INCHES MAXIMUM IN
style_designatorRECESSED
surface_treatmentCADMIUM OR ZINC OVERALL
material_thickness0.031 INCHES NOMINAL IN
material_document_and_classificationQQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 2 OR CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
NSN5310-00-595-7071
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: R21247 · 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
•
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
•
MATERIAL THICKNESS: 0.031 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.625 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 OR CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 1009 OVERALL
•
RECESS DEPTH: 0.188 INCHES NOMINAL IN
•
STYLE DESIGNATOR: RECESSED
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
MATERIAL THICKNESS0.031 INCHES NOMINAL IN
HOLE DIAMETER0.625 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 OR CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 1009 OVERALL
RECESS DEPTH0.188 INCHES NOMINAL IN
STYLE DESIGNATORRECESSED
OVERALL HEIGHT0.203 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
OUTSIDE DIAMETER1.078 INCHES MINIMUM AND 1.109 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
989084-5CInterchangeable
interchangeable cross-reference
interchangeable
16067Interchangeable
interchangeable cross-reference
interchangeable
16067ADXInterchangeable
interchangeable cross-reference
interchangeable
55-22084-20Interchangeable
interchangeable cross-reference
interchangeable
016067-01Interchangeable
interchangeable cross-reference
interchangeable
SL6223PC25Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R21247?
R21247 is a WASHER,RECESSED.
What parts can replace R21247?
There are 24 known substitutes for R21247: 989084-5C, 16067, 16067ADX and 21 more. Substitute compatibility should be verified for your specific system.
Is R21247 still available?
R21247 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026