PartsTable
Technical Data Sheet
121-539 ✓ 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 CONNECTOR,PLUG,ELECTRICAL is a the manufacturer industrial component. Key specifications include color: BLACK, material: COPPER ALLOY OVERALL, thickness: 0.022 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN, hole_diameter: 0.094 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN, shell_material: PLASTIC, overall_diameter: 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-639-6711, 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
121-539
NSN: 5310-00-639-6711
FSC: 5310
CAGE: 90073 — CMC ELECTRONICS INC (CAN)
SPECIFICATIONS
colorBLACK
materialCOPPER ALLOY OVERALL
thickness0.022 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
hole_diameter0.094 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN
shell_materialPLASTIC
overall_diameter0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN
special_featuresTERMINAL TYPE:SCREW;POLE SECTION:2X6 PLUS 5X1.5 MM;7-POLW,24V V
surface_treatmentCADMIUM OVERALL
peripheral_shape_styleROUND
cable_entrance_diameter15.0 INCHES MINIMUM AND 17.0 INCHES MAXIMUM IN
center_hole_shape_styleROUND
connector_locking_methodLATCH
NSN5310-00-639-6711
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 121-539 · 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
CENTER HOLE SHAPE STYLE: ROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
MATERIAL: COPPER ALLOY OVERALL
PERIPHERAL SHAPE STYLE: ROUND
THICKNESS: 0.022 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
HOLE DIAMETER: 0.094 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN
OVERALL DIAMETER: 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE SHAPE STYLEROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
MATERIALCOPPER ALLOY OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.022 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
HOLE DIAMETER0.094 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN
OVERALL DIAMETER0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTCADMIUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
T9161357PC10Interchangeable
interchangeable cross-reference
interchangeable
SF-276 5/16Interchangeable
interchangeable cross-reference
interchangeable
GPW3571Interchangeable
interchangeable cross-reference
interchangeable
36-24Interchangeable
interchangeable cross-reference
interchangeable
GGG-C-95 TY2CL2SZ24 IN.Interchangeable
interchangeable cross-reference
interchangeable
7900345Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 121-539?
121-539 is a CONNECTOR,PLUG,ELECTRICAL.
What parts can replace 121-539?
There are 15 known substitutes for 121-539: T9161357PC10, SF-276 5/16, GPW3571 and 12 more. Substitute compatibility should be verified for your specific system.
Is 121-539 still available?
121-539 is currently cancelled.
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