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7128372P001 — WASHER,SPLIT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

7128372P001: WASHER,SPLIT.

The WASHER,SPLIT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN, hardness_rating: 55.9 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 59.5 ROCKWELL SUPERFICIAL 30-N MAXIMUM, outside_diameter: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN, style_designator: SPLIT, surface_treatment: CADMIUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-639-7435, 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
7128372P001
NSN: 5310-00-639-7435
FSC: 5310 — Nuts and Washers
CAGE: 03538 — LOCKHEED MARTIN CORPORATION DIV RMS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
hardness_rating55.9 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 59.5 ROCKWELL SUPERFICIAL 30-N MAXIMUM
outside_diameter0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
style_designatorSPLIT
surface_treatmentCADMIUM OVERALL
material_thickness0.014 INCHES MINIMUM AND 0.024 INCHES MAXIMUM IN
minimum_tensile_strength165000 POUNDS PER SQUARE INCH LBS
specification/standard_data77272-BACW10X MANUFACTURERS STANDARD
distance_across_split_opening0.020 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN
material_document_and_classificationMIL-S-46049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-639-7435
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 7128372P001 · 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 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
DISTANCE ACROSS SPLIT OPENING: 0.020 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN
•
HARDNESS RATING: 55.9 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 59.5 ROCKWELL SUPERFICIAL 30-N MAXIMUM
•
STYLE DESIGNATOR: SPLIT
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-46049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.014 INCHES MINIMUM AND 0.024 INCHES MAXIMUM IN
•
SPECIFICATION/STANDARD DATA: 77272-BACW10X MANUFACTURERS STANDARD
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
DISTANCE ACROSS SPLIT OPENING0.020 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN
HARDNESS RATING55.9 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 59.5 ROCKWELL SUPERFICIAL 30-N MAXIMUM
STYLE DESIGNATORSPLIT
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-46049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
MATERIAL THICKNESS0.014 INCHES MINIMUM AND 0.024 INCHES MAXIMUM IN
SPECIFICATION/STANDARD DATA77272-BACW10X MANUFACTURERS STANDARD
SURFACE TREATMENTCADMIUM OVERALL
MINIMUM TENSILE STRENGTH165000 POUNDS PER SQUARE INCH LBS
SUBSTITUTES & CROSS-REFERENCES 9
50-079-4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
5310PL1753512Reference document
Same NSN cross-reference
Reference document — Informative reference only
8924424-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
5310PL1599210Reference document
Same NSN cross-reference
Reference document — Informative reference only
VA97-0121-001Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
2600-SW2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7128372P001?
7128372P001 is a WASHER,SPLIT.
What parts can replace 7128372P001?
There are 9 known substitutes for 7128372P001: 50-079-4, 5310PL1753512, 8924424-2 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 7128372P001?
7128372P001 is cataloged in the U.S. Government catalog under NSN 5310-00-639-7435. 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.