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DAX12866 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

DAX12866: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OVERALL, recess_depth: 1.007 INCHES NOMINAL IN, hole_diameter: 4.900 INCHES NOMINAL IN, overall_height: 1.210 INCHES NOMINAL IN, hardness_rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM, outside_diameter: 5.718 INCHES MINIMUM AND 5.720 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-073-7731, 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
DAX12866
NSN: 5310-01-073-7731
FSC: 5310 — Nuts and Washers
CAGE: 73342 — ALLISON TRANSMISSION INC DBA ALLISON TRANSMISSION, INC (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OVERALL
recess_depth1.007 INCHES NOMINAL IN
hole_diameter4.900 INCHES NOMINAL IN
overall_height1.210 INCHES NOMINAL IN
hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
outside_diameter5.718 INCHES MINIMUM AND 5.720 INCHES MAXIMUM IN
special_features2350-01-087-1095
style_designatorRECESSED
material_thickness0.113 INCHES NOMINAL IN
NSN5310-01-073-7731
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: DAX12866 · 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
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: RECESSED
•
OUTSIDE DIAMETER: 5.718 INCHES MINIMUM AND 5.720 INCHES MAXIMUM IN
•
RECESS DEPTH: 1.007 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.113 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 4140 OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.210 INCHES NOMINAL IN
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORRECESSED
OUTSIDE DIAMETER5.718 INCHES MINIMUM AND 5.720 INCHES MAXIMUM IN
RECESS DEPTH1.007 INCHES NOMINAL IN
MATERIAL THICKNESS0.113 INCHES NOMINAL IN
SPECIAL FEATURES2350-01-087-1095
MATERIALSTEEL COMP 4140 OVERALL
HOLE DIAMETER4.900 INCHES NOMINAL 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 DAX12866?
DAX12866 is a WASHER,RECESSED.
What is the NSN for DAX12866?
DAX12866 is cataloged in the U.S. Government catalog under NSN 5310-01-073-7731. 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.