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BACW10AKC8 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

BACW10AKC8: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OR STEEL COMP 8630 OVERALL, recess_angle: 90.0 DEGREES NOMINAL, hole_diameter: 0.501 INCHES MINIMUM AND 0.512 INCHES MAXIMUM IN, hardness_rating: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM, recess_diameter: 0.614 INCHES MINIMUM AND 0.634 INCHES MAXIMUM IN, outside_diameter: 0.950 INCHES MINIMUM AND 0.970 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-849-7979, 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
BACW10AKC8
NSN: 5310-00-849-7979
FSC: 5310 — Nuts and Washers
CAGE: 81205 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OR STEEL COMP 8630 OVERALL
recess_angle90.0 DEGREES NOMINAL
hole_diameter0.501 INCHES MINIMUM AND 0.512 INCHES MAXIMUM IN
hardness_rating35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
recess_diameter0.614 INCHES MINIMUM AND 0.634 INCHES MAXIMUM IN
outside_diameter0.950 INCHES MINIMUM AND 0.970 INCHES MAXIMUM IN
style_designatorRECESSED
surface_treatmentNICKEL AND CADMIUM OVERALL
material_thickness0.064 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
specification/standard_data81205-BACW10BN MANUFACTURERS STANDARD
material_document_and_classificationMIL-S-18729 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18728 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationAMS 2416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-849-7979
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: BACW10AKC8 · 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: AMS 2416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
HARDNESS RATING: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-18729 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18728 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.950 INCHES MINIMUM AND 0.970 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.064 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
•
SPECIFICATION/STANDARD DATA: 81205-BACW10BN MANUFACTURERS STANDARD
•
RECESS DIAMETER: 0.614 INCHES MINIMUM AND 0.634 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-18729 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18728 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.950 INCHES MINIMUM AND 0.970 INCHES MAXIMUM IN
MATERIAL THICKNESS0.064 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
SPECIFICATION/STANDARD DATA81205-BACW10BN MANUFACTURERS STANDARD
RECESS DIAMETER0.614 INCHES MINIMUM AND 0.634 INCHES MAXIMUM IN
SURFACE TREATMENTNICKEL AND CADMIUM OVERALL
MATERIALSTEEL COMP 4130 OR STEEL COMP 8630 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 1
BACW10BN8CSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is BACW10AKC8?
BACW10AKC8 is a WASHER,RECESSED.
What parts can replace BACW10AKC8?
There is 1 known substitute for BACW10AKC8: BACW10BN8C. Substitute compatibility should be verified for your specific system.
What is the NSN for BACW10AKC8?
BACW10AKC8 is cataloged in the U.S. Government catalog under NSN 5310-00-849-7979. 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.