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BACW10AKC6 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

BACW10AKC6: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OR STEEL COMP 4130 OR STEEL COMP 8740 OVERALL, recess_angle: 80.0 DEGREES MINIMUM AND 100.0 DEGREES MAXIMUM, hole_diameter: 0.376 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN, hardness_rating: 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM, recess_diameter: 0.484 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN, outside_diameter: 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-150-4208, 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
BACW10AKC6
NSN: 5310-00-150-4208
FSC: 5310 — Nuts and Washers
CAGE: 17765 — THE BOEING COMPANY DIV COMMERCIAL (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OR STEEL COMP 4130 OR STEEL COMP 8740 OVERALL
recess_angle80.0 DEGREES MINIMUM AND 100.0 DEGREES MAXIMUM
hole_diameter0.376 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
hardness_rating39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
recess_diameter0.484 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
outside_diameter0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
style_designatorRECESSED
surface_treatmentCADMIUM OVERALL
material_thickness0.068 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN
specification/standard_data81205-BACW10AK MANUFACTURERS STANDARD
material_document_and_classificationMIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6358 ASSN STD 3RD MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-150-4208
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: BACW10AKC6 · 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 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
HARDNESS RATING: 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6358 ASSN STD 3RD MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.068 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN
•
SPECIFICATION/STANDARD DATA: 81205-BACW10AK MANUFACTURERS STANDARD
•
RECESS DIAMETER: 0.484 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6358 ASSN STD 3RD MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
MATERIAL THICKNESS0.068 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN
SPECIFICATION/STANDARD DATA81205-BACW10AK MANUFACTURERS STANDARD
RECESS DIAMETER0.484 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL COMP 4140 OR STEEL COMP 4130 OR STEEL COMP 8740 OVERALL
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is BACW10AKC6?
BACW10AKC6 is a WASHER,RECESSED.
What is the NSN for BACW10AKC6?
BACW10AKC6 is cataloged in the U.S. Government catalog under NSN 5310-00-150-4208. 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.