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Technical Data Sheet
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161A13S25 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

161A13S25: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include end_item_identification: COMPRESSOR HP, part_name_assigned_by_controlling_agency: RING, RETAINING. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-673-7651, 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
161A13S25
NSN: 5325-01-673-7651
FSC: 5325 — Fastening Devices
CAGE: 830Q4 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DBA CURTISS-WRIGHT STEAM AND AIR SOLUTIONS DIV STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
end_item_identificationCOMPRESSOR HP
part_name_assigned_by_controlling_agencyRING, RETAINING
NSN5325-01-673-7651
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 161A13S25 · 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
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYRING, RETAINING
END ITEM IDENTIFICATIONCOMPRESSOR HP
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
161A13S125Reference document
Same NSN cross-reference
Reference document — Secondary reference
ML11387297G1 ILLUS NBR 11Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 161A13S25?
161A13S25 is a RING,RETAINING.
What parts can replace 161A13S25?
There are 2 known substitutes for 161A13S25: 161A13S125, ML11387297G1 ILLUS NBR 11. Substitute compatibility should be verified for your specific system.
What is the NSN for 161A13S25?
161A13S25 is cataloged in the U.S. Government catalog under NSN 5325-01-673-7651. This indicates validated use in U.S. government and defense supply chains.
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