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Technical Data Sheet
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62.71.056 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

62.71.056: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, ring_style: SPECIAL, usage_design: EXTERNAL, inside_diameter: 2.771 INCHES MINIMUM AND 2.791 INCHES MAXIMUM IN, strength_rating: ERR-060, outside_diameter: 3.011 INCHES MINIMUM AND 3.031 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-770-7240, 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
62.71.056
NSN: 5325-00-770-7240
FSC: 5325 — Fastening Devices
CAGE: 0124B — SAPA OPERACIONES SL (ESP)
SPECIFICATIONS
materialSTEEL
ring_styleSPECIAL
usage_designEXTERNAL
inside_diameter2.771 INCHES MINIMUM AND 2.791 INCHES MAXIMUM IN
strength_ratingERR-060
outside_diameter3.011 INCHES MINIMUM AND 3.031 INCHES MAXIMUM IN
material_diameter0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleROUND
material_document_and_classificationQQ-W-428 FED SPEC SINGLE MATERIAL RESPONSE
NSN5325-00-770-7240
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 62.71.056 · 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
•
STRENGTH RATING: ERR-060
•
MATERIAL DIAMETER: 0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-W-428 FED SPEC SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
OUTSIDE DIAMETER: 3.011 INCHES MINIMUM AND 3.031 INCHES MAXIMUM IN
•
INSIDE DIAMETER: 2.771 INCHES MINIMUM AND 2.791 INCHES MAXIMUM IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS
USAGE DESIGNEXTERNAL
STRENGTH RATINGERR-060
MATERIAL DIAMETER0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-W-428 FED SPEC SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLEROUND
OUTSIDE DIAMETER3.011 INCHES MINIMUM AND 3.031 INCHES MAXIMUM IN
INSIDE DIAMETER2.771 INCHES MINIMUM AND 2.791 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESPECIAL
MATERIALSTEEL
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 2
5325007707240Reference document
Same NSN cross-reference
Reference document — Informative reference only
5365007707240Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 62.71.056?
62.71.056 is a RING,RETAINING.
What parts can replace 62.71.056?
There are 2 known substitutes for 62.71.056: 5325007707240, 5365007707240. Substitute compatibility should be verified for your specific system.
What is the NSN for 62.71.056?
62.71.056 is cataloged in the U.S. Government catalog under NSN 5325-00-770-7240. 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.