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PartsTable / COMPONENT / S-4281
S-4281 ✓ 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 BACKSHELL,ELECTRICAL CONNECTOR is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY, thickness: 0.031 INCHES NOMINAL IN, hole_diameter: 0.203 INCHES NOMINAL IN, overall_width: 2.250 INCHES NOMINAL IN, overall_height: 1.562 INCHES NOMINAL IN, overall_length: 3.330 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-637-4000, 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
S-4281
NSN: 5310-00-637-4000
FSC: 5310
CAGE: 77210 — SYNTERIALS INC. (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
thickness0.031 INCHES NOMINAL IN
hole_diameter0.203 INCHES NOMINAL IN
overall_width2.250 INCHES NOMINAL IN
overall_height1.562 INCHES NOMINAL IN
overall_length3.330 INCHES NOMINAL IN
overall_diameter0.625 INCHES NOMINAL IN
size_designation33 AND 34
style_designatorHOOD, TOP OPENING W/CLAMP
surface_treatmentCADMIUM
cable_opening_diameter0.937 INCHES MAXIMUM IN
cable_opening_quantity1
NSN5310-00-637-4000
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: S-4281 · 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
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OVERALL DIAMETER: 0.625 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
THICKNESS: 0.031 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SURFACE TREATMENT: CADMIUM OVERALL
•
HOLE DIAMETER: 0.203 INCHES NOMINAL IN
•
PERIPHERAL SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OVERALL DIAMETER0.625 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
THICKNESS0.031 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL
HOLE DIAMETER0.203 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND
CENTER HOLE SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
622-10Interchangeable
interchangeable cross-reference
interchangeable
FB40144Interchangeable
interchangeable cross-reference
interchangeable
24710Interchangeable
interchangeable cross-reference
interchangeable
2109-10-01Interchangeable
interchangeable cross-reference
interchangeable
GREENS KING IVInterchangeable
interchangeable cross-reference
interchangeable
62221Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S-4281?
S-4281 is a BACKSHELL,ELECTRICAL CONNECTOR.
What parts can replace S-4281?
There are 18 known substitutes for S-4281: 622-10, FB40144, 24710 and 15 more. Substitute compatibility should be verified for your specific system.
Is S-4281 still available?
S-4281 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