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596640 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

596640: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: PLASTIC LENS, part_name_assigned_by_controlling_agency: LENS-INTERIOR LIGHT. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-663-2748, 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
596640
NSN: 5325-00-663-2748
NIINs: 006632748, 016208187
FSC: 5325 — Fastening Devices
CAGE: 38018 — MANITOWOC ENGINEERING CO DIVISION OF THE MANITOWOC CO INC (USA)
SPECIFICATIONS
materialPLASTIC LENS
part_name_assigned_by_controlling_agencyLENS-INTERIOR LIGHT
NSN5325-00-663-2748
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 596640 · 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: 65.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 68.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM
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USAGE DESIGN: INTERNAL
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STRENGTH RATING: ERR-060
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MATERIAL DOCUMENT AND CLASSIFICATION: SAE 1070 ASSN STD SINGLE MATERIAL RESPONSE
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CROSS-SECTIONAL SHAPE STYLE: DOUBLE OVAL
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OUTSIDE DIAMETER: 6.106 INCHES MINIMUM AND 6.141 INCHES MAXIMUM IN
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MAJOR THICKNESS: 0.068 INCHES MINIMUM AND 0.076 INCHES MAXIMUM IN
•
INSIDE DIAMETER: 5.852 INCHES MINIMUM AND 5.895 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
MATERIAL HARDNESS RATING65.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 68.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM
USAGE DESIGNINTERNAL
STRENGTH RATINGERR-060
MATERIAL DOCUMENT AND CLASSIFICATIONSAE 1070 ASSN STD SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLEDOUBLE OVAL
OUTSIDE DIAMETER6.106 INCHES MINIMUM AND 6.141 INCHES MAXIMUM IN
MAJOR THICKNESS0.068 INCHES MINIMUM AND 0.076 INCHES MAXIMUM IN
INSIDE DIAMETER5.852 INCHES MINIMUM AND 5.895 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESPECIAL FLAT
SUBSTITUTES & CROSS-REFERENCES 3
184635Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
D-PRB-611Reference document
Same NSN cross-reference
Reference document — Secondary reference
RR590Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 596640?
596640 is a RING,RETAINING.
What parts can replace 596640?
There are 3 known substitutes for 596640: 184635, D-PRB-611, RR590. Substitute compatibility should be verified for your specific system.
What is the NSN for 596640?
596640 is cataloged in the U.S. Government catalog under NSN 5325-00-663-2748. 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.