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131 052 — CONNECTOR,RECEPTACLE,ELECTRICAL

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

131 052: CONNECTOR,RECEPTACLE,ELECTRICAL.

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include hole_diameter: 1.525 INCHES MINIMUM AND 1.561 INCHES MAXIMUM IN, hardness_rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM, outside_diameter: 2.430 INCHES MAXIMUM IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: CADMIUM OR ZINC OVERALL, material_thickness: 0.375 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-013-1052, 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
MRO→ MRO_GENERAL→ 131 052
NSN: 5310-00-013-1052
NIINs: 000131052, 005658024, 014318716
FSC: 5310 — Nuts and Washers
CAGE: 31007 — NAVISTAR INTERNATIONAL CORPORATION DBA NAVISTAR (USA)
SPECIFICATIONS
hole_diameter1.525 INCHES MINIMUM AND 1.561 INCHES MAXIMUM IN
hardness_rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
outside_diameter2.430 INCHES MAXIMUM IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentCADMIUM OR ZINC OVERALL
material_thickness0.375 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
nondefinitive_spec/std_data2 STYLE AND A CLASS
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES OVERALL
surface_treatment_document_and_classificationQQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL
NSN5310-00-013-1052
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 131 052 · 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 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
OUTSIDE DIAMETER: 2.430 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.375 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
•
NONDEFINITIVE SPEC/STD DATA: 2 STYLE AND A CLASS
•
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
OUTSIDE DIAMETER2.430 INCHES MAXIMUM IN
MATERIAL THICKNESS0.375 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATA2 STYLE AND A CLASS
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
MATERIALSTEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OR STEEL COMP 1065 OR STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1071 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OVERALL
HOLE DIAMETER1.525 INCHES MINIMUM AND 1.561 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 2
MS35338-38Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
FFW84CLASSASTYLE2Reference document
Same NSN cross-reference
Reference document — Identification reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 131 052?
131 052 is a CONNECTOR,RECEPTACLE,ELECTRICAL. It is classified as a MRO (MRO_GENERAL).
What parts can replace 131 052?
There are 2 known substitutes for 131 052: MS35338-38, FFW84CLASSASTYLE2. Substitute compatibility should be verified for your specific system.
What is the NSN for 131 052?
131 052 is cataloged in the U.S. Government catalog under NSN 5310-00-013-1052. 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.