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BL1502 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

BL1502: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, recess_angle: 80.0 DEGREES MINIMUM AND 84.0 DEGREES MAXIMUM, hole_diameter: 0.218 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN, recess_diameter: 0.390 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN, outside_diameter: 0.672 INCHES MINIMUM AND 0.704 INCHES MAXIMUM IN, style_designator: RECESSED. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-560-6414, 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
BL1502
NSN: 5310-00-560-6414
FSC: 5310 — Nuts and Washers
CAGE: 08484 — BREEZE-EASTERN LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
recess_angle80.0 DEGREES MINIMUM AND 84.0 DEGREES MAXIMUM
hole_diameter0.218 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN
recess_diameter0.390 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
outside_diameter0.672 INCHES MINIMUM AND 0.704 INCHES MAXIMUM IN
style_designatorRECESSED
surface_treatmentCADMIUM AND CHROMATE OVERALL
material_thickness0.099 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
material_document_and_classificationMIL-S-6758 COND F4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-560-6414
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: BL1502 · 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 DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
STYLE DESIGNATOR: RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6758 COND F4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.672 INCHES MINIMUM AND 0.704 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.099 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
•
RECESS DIAMETER: 0.390 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
MATERIAL: STEEL COMP 4130 OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6758 COND F4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.672 INCHES MINIMUM AND 0.704 INCHES MAXIMUM IN
MATERIAL THICKNESS0.099 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
RECESS DIAMETER0.390 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
MATERIALSTEEL COMP 4130 OVERALL
HOLE DIAMETER0.218 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN
RECESS ANGLE80.0 DEGREES MINIMUM AND 84.0 DEGREES MAXIMUM
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is BL1502?
BL1502 is a WASHER,RECESSED.
What is the NSN for BL1502?
BL1502 is cataloged in the U.S. Government catalog under NSN 5310-00-560-6414. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.