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BACW10CW12CCU — WASHER,CONCAVE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

BACW10CW12CCU: WASHER,CONCAVE.

The WASHER,CONCAVE is a the manufacturer industrial component. Key specifications include radius: 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN, material: STEEL COMP 630 OR STEEL COMP 631 OVERALL, hole_diameter: 1.005 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN, hardness_rating: 40.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM, outside_diameter: 1.395 INCHES MINIMUM AND 1.405 INCHES MAXIMUM IN, style_designator: CONCAVE. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-396-2877, 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
BACW10CW12CCU
NSN: 5310-01-396-2877
FSC: 5310 — Nuts and Washers
CAGE: 81205 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
radius0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN
materialSTEEL COMP 630 OR STEEL COMP 631 OVERALL
hole_diameter1.005 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
outside_diameter1.395 INCHES MINIMUM AND 1.405 INCHES MAXIMUM IN
style_designatorCONCAVE
surface_treatmentPASSIVATE OVERALL
material_thickness0.275 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
material_document_and_classificationAMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5528 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-396-2877
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: BACW10CW12CCU · 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-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
RADIUS: 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: CONCAVE
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5528 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.395 INCHES MINIMUM AND 1.405 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.275 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
RADIUS0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORCONCAVE
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5528 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.395 INCHES MINIMUM AND 1.405 INCHES MAXIMUM IN
MATERIAL THICKNESS0.275 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 630 OR STEEL COMP 631 OVERALL
HOLE DIAMETER1.005 INCHES MINIMUM AND 1.010 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 3
942010-12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
03A350CC12-CBSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
K29913-12NFSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 BACW10CW12CCU?
BACW10CW12CCU is a WASHER,CONCAVE.
What parts can replace BACW10CW12CCU?
There are 3 known substitutes for BACW10CW12CCU: 942010-12, 03A350CC12-CB, K29913-12NF. Substitute compatibility should be verified for your specific system.
What is the NSN for BACW10CW12CCU?
BACW10CW12CCU is cataloged in the U.S. Government catalog under NSN 5310-01-396-2877. 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.