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156588 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

156588: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, end_style: VERTEX BELOW CENTER, ring_style: STRAIGHT GAP, usage_design: EXTERNAL, inside_diameter: 0.621 INCHES NOMINAL IN, major_thickness: 0.042 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-713-9983, 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
156588
NSN: 5325-00-713-9983
NIINs: 007139983, 016052961
FSC: 5325 — Fastening Devices
CAGE: 57712 — TELEMECHANICS INC (USA)
SPECIFICATIONS
materialSTEEL
end_styleVERTEX BELOW CENTER
ring_styleSTRAIGHT GAP
usage_designEXTERNAL
inside_diameter0.621 INCHES NOMINAL IN
major_thickness0.042 INCHES NOMINAL IN
outside_diameter0.810 INCHES NOMINAL IN
surface_treatmentNICKEL
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleRECTANGULAR
NSN5325-00-713-9983
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 156588 · 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
•
USAGE DESIGN: EXTERNAL
•
END STYLE: VERTEX BELOW CENTER
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OUTSIDE DIAMETER: 0.810 INCHES NOMINAL IN
•
MAJOR THICKNESS: 0.042 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.621 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
RING STYLE: STRAIGHT GAP
TECHNICAL CHARACTERISTICS
USAGE DESIGNEXTERNAL
END STYLEVERTEX BELOW CENTER
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER0.810 INCHES NOMINAL IN
MAJOR THICKNESS0.042 INCHES NOMINAL IN
INSIDE DIAMETER0.621 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESTRAIGHT GAP
SURFACE TREATMENTNICKEL
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 156588?
156588 is a RING,RETAINING.
What is the NSN for 156588?
156588 is cataloged in the U.S. Government catalog under NSN 5325-00-713-9983. 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.