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BACW10DH-C12 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

BACW10DH-C12: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, hole_diameter: 0.757 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES TOP, hardness_rating: 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM, outside_diameter: 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN, style_designator: RECESSED BOTH SIDES. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-178-3709, 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
BACW10DH-C12
NSN: 5310-01-178-3709
FSC: 5310 — Nuts and Washers
CAGE: 81205 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
hole_diameter0.757 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES TOP
hardness_rating38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
outside_diameter1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN
style_designatorRECESSED BOTH SIDES
top_recess_angle86.0 DEGREES MINIMUM AND 94.0 DEGREES MAXIMUM
surface_treatmentCADMIUM AND CHROMATE OVERALL
material_thickness0.185 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
bottom_recess_angle86.0 DEGREES MINIMUM AND 94.0 DEGREES MAXIMUM
top_recess_diameter0.920 INCHES MINIMUM AND 0.921 INCHES MAXIMUM IN
bottom_recess_diameter0.920 INCHES MINIMUM AND 0.921 INCHES MAXIMUM IN
NSN5310-01-178-3709
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: BACW10DH-C12 · 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 FINISH: 63.0 MICROINCHES BOTTOM
•
TOP RECESS DIAMETER: 0.920 INCHES MINIMUM AND 0.921 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
BOTTOM RECESS DIAMETER: 0.920 INCHES MINIMUM AND 0.921 INCHES MAXIMUM IN
•
HARDNESS RATING: 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
•
TOP RECESS ANGLE: 86.0 DEGREES MINIMUM AND 94.0 DEGREES MAXIMUM
•
STYLE DESIGNATOR: RECESSED BOTH SIDES
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES BOTTOM
SURFACE FINISH63.0 MICROINCHES TOP
TOP RECESS DIAMETER0.920 INCHES MINIMUM AND 0.921 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
BOTTOM RECESS DIAMETER0.920 INCHES MINIMUM AND 0.921 INCHES MAXIMUM IN
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
TOP RECESS ANGLE86.0 DEGREES MINIMUM AND 94.0 DEGREES MAXIMUM
STYLE DESIGNATORRECESSED BOTH SIDES
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is BACW10DH-C12?
BACW10DH-C12 is a WASHER,RECESSED.
What is the NSN for BACW10DH-C12?
BACW10DH-C12 is cataloged in the U.S. Government catalog under NSN 5310-01-178-3709. 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.