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Technical Data Sheet
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655021001 — RING,RETAINING

✓ Government record, cited
HPE · BOLT SCREW
PRODUCT OVERVIEW

655021001: RING,RETAINING.

- Maximize your business PC performance with HP Memory. Upgrading your memory is a cost-effective way to boost your system performance without having to upgrade your processor. - Expect fast start-up times with reduced delays during routine operations and system maintenance functions.

Easily toggle back and forth between several open applications with noticeable speed. - More programs running simultaneously. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-006-2747, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
655021001
NSN: 5325-00-006-2747
FSC: 5325 — Fastening Devices
CAGE: 55901 — DARE ELECTRONICS, INC. (USA)
SPECIFICATIONS
materialCOPPER ALLOY 170 OR COPPER ALLOY 172
end_style90 DEGREE PARALLEL
ring_styleSTRAIGHT GAP
usage_designINTERNAL
inside_diameter1.330 INCHES MINIMUM AND 1.345 INCHES MAXIMUM IN
outside_diameter1.469 INCHES NOMINAL IN
material_diameter0.0126 INCHES NOMINAL IN
surface_treatmentTIN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleROUND
material_document_and_classificationQQ-C-533 ALLOY 170 TEMPER HALF HARD OR ALLOY 172 TEMPER HALF HARD FED SPEC SINGLE MATERIAL RESPONSE
NSN5325-00-006-2747
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COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 655021001 · HPE ⚠ 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: INTERNAL
•
END STYLE: 90 DEGREE PARALLEL
•
MATERIAL DIAMETER: 0.0126 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-533 ALLOY 170 TEMPER HALF HARD OR ALLOY 172 TEMPER HALF HARD FED SPEC SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
OUTSIDE DIAMETER: 1.469 INCHES NOMINAL IN
•
INSIDE DIAMETER: 1.330 INCHES MINIMUM AND 1.345 INCHES MAXIMUM IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS
USAGE DESIGNINTERNAL
END STYLE90 DEGREE PARALLEL
MATERIAL DIAMETER0.0126 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-533 ALLOY 170 TEMPER HALF HARD OR ALLOY 172 TEMPER HALF HARD FED SPEC SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLEROUND
OUTSIDE DIAMETER1.469 INCHES NOMINAL IN
INSIDE DIAMETER1.330 INCHES MINIMUM AND 1.345 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESTRAIGHT GAP
SURFACE TREATMENTTIN
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 655021001?
655021001 is a RING,RETAINING manufactured by HPE.
What is the NSN for 655021001?
655021001 is cataloged in the U.S. Government catalog under NSN 5325-00-006-2747. 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.