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Technical Data Sheet
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121752 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The COVER,ELECTRICAL CONNECTOR is a the manufacturer industrial component. Key specifications include material: ALUMINUM, body_height: 24.0 MILLIMETERS NOMINAL MM, hole_diameter: 0.168 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN, hardness_rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM, outside_diameter: 0.365 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN, overall_diameter: 30.0 MILLIMETERS NOMINAL MM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-012-1752, 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
121752
NSN: 5310-00-012-1752
FSC: 5310
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialALUMINUM
body_height24.0 MILLIMETERS NOMINAL MM
hole_diameter0.168 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
outside_diameter0.365 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN
overall_diameter30.0 MILLIMETERS NOMINAL MM
special_featuresCONNECTOR SIZE IS 14S; ROPE LENGTH IS 193MM; MM
style_designatorEXTERNAL BAYONET W/CHAIN OR ROPE
surface_treatmentZINC AND NICKEL
material_thickness0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
material_document_and_classificationQQ-S-633,FS1060 TO FS1080-CANCELLED FED SPEC ALL MATERIAL RESPONSES OVERALL
part_name_assigned_by_controlling_agencyPLUG CONNECTOR CAP WITH STAINLESS STEEL WIRE ROPE
NSN5310-00-012-1752
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 121752 · 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: CADMIUM OR ZINC OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633,FS1060 TO FS1080-CANCELLED FED SPEC ALL MATERIAL RESPONSES OVERALL
•
MATERIAL: STEEL OVERALL
•
MATERIAL THICKNESS: 0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.365 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
•
HOLE DIAMETER: 0.168 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: FLAT EXTERNAL TEETH
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633,FS1060 TO FS1080-CANCELLED FED SPEC ALL MATERIAL RESPONSES OVERALL
MATERIALSTEEL OVERALL
MATERIAL THICKNESS0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.365 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
HOLE DIAMETER0.168 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN
STYLE DESIGNATORFLAT EXTERNAL TEETH
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
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DC-44-FT-4Interchangeable
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PRSEP450V8UFInterchangeable
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LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 121752?
121752 is a COVER,ELECTRICAL CONNECTOR.
What parts can replace 121752?
There are 26 known substitutes for 121752: 15520, 2820, 64AX153 and 23 more. Substitute compatibility should be verified for your specific system.
Is 121752 still available?
121752 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026