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5133-87 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

5133-87: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, usage_design: EXTERNAL, inside_diameter: 0.688 INCHES NOMINAL IN, major_thickness: 0.050 INCHES NOMINAL IN, casehardening_indicator: NOT CASEHARDENED, material_hardness_rating: 47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-598-4275, 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
5133-87
NSN: 5325-00-598-4275
FSC: 5325 — Fastening Devices
CAGE: 07382 — ROTOR CLIP COMPANY, INC. (USA)
SPECIFICATIONS
materialSTEEL
ring_styleE
usage_designEXTERNAL
inside_diameter0.688 INCHES NOMINAL IN
major_thickness0.050 INCHES NOMINAL IN
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 NO. 66,FS1066 TO FS1090 FED STD SINGLE MATERIAL RESPONSE
NSN5325-00-598-4275
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5133-87 · 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
•
USAGE DESIGN: EXTERNAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD NO. 66,FS1066 TO FS1090 FED STD SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
MAJOR THICKNESS: 0.050 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.688 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
RING STYLE: E
TECHNICAL CHARACTERISTICS
MATERIAL HARDNESS RATING47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
USAGE DESIGNEXTERNAL
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD NO. 66,FS1066 TO FS1090 FED STD SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MAJOR THICKNESS0.050 INCHES NOMINAL IN
INSIDE DIAMETER0.688 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLEE
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 2
1300702Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS16633-87Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5133-87?
5133-87 is a RING,RETAINING.
What parts can replace 5133-87?
There are 2 known substitutes for 5133-87: 1300702, MS16633-87. Substitute compatibility should be verified for your specific system.
What is the NSN for 5133-87?
5133-87 is cataloged in the U.S. Government catalog under NSN 5325-00-598-4275. 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.