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Technical Data Sheet
PartsTable / COMPONENT / 5100-143-S-MD
5100-143-S-MD ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, ring_style: EXTERNAL, usage_design: EXTERNAL, inside_diameter: 1.333 INCHES NOMINAL IN, major_thickness: 0.050 INCHES NOMINAL IN, surface_treatment: CADMIUM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-530-7957, 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
5100-143-S-MD
NSN: 5325-00-530-7957
FSC: 5325
CAGE: 79136 — TRUARC COMPANY LLC DBA WALDES TRUARC (USA)
SPECIFICATIONS
materialSTEEL
ring_styleEXTERNAL
usage_designEXTERNAL
inside_diameter1.333 INCHES NOMINAL IN
major_thickness0.050 INCHES NOMINAL IN
surface_treatmentCADMIUM
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationFED STD 66,FS1066 TO 1090 FED STD SINGLE MATERIAL RESPONSE
NSN5325-00-530-7957
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5100-143-S-MD · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL HARDNESS RATING: 47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66,FS1066 TO 1090 FED STD SINGLE MATERIAL RESPONSE
•
MATERIAL: STEEL
•
SURFACE TREATMENT: CADMIUM
•
RING STYLE: EXTERNAL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
MAJOR THICKNESS: 0.050 INCHES NOMINAL IN
•
INSIDE DIAMETER: 1.333 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL HARDNESS RATING47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66,FS1066 TO 1090 FED STD SINGLE MATERIAL RESPONSE
MATERIALSTEEL
SURFACE TREATMENTCADMIUM
RING STYLEEXTERNAL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MAJOR THICKNESS0.050 INCHES NOMINAL IN
INSIDE DIAMETER1.333 INCHES NOMINAL IN
USAGE DESIGNEXTERNAL
CASEHARDENING INDICATORNOT CASEHARDENED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
117488Interchangeable
interchangeable cross-reference
interchangeable
9413403Interchangeable
interchangeable cross-reference
interchangeable
722 0150 000 PIECE 53Interchangeable
interchangeable cross-reference
interchangeable
3100-150-ST-CDInterchangeable
interchangeable cross-reference
interchangeable
5365005307957Interchangeable
Same NIIN cross-reference
interchangeable
MIL-DTL-21248Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5100-143-S-MD?
5100-143-S-MD is a RING,RETAINING.
What parts can replace 5100-143-S-MD?
There are 11 known substitutes for 5100-143-S-MD: 117488, 9413403, 722 0150 000 PIECE 53 and 8 more. Substitute compatibility should be verified for your specific system.
Is 5100-143-S-MD still available?
5100-143-S-MD 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