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5555-18SPP — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

5555-18SPP: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1060, ring_style: EXTERNAL, usage_design: EXTERNAL, inside_diameter: 0.181 INCHES NOMINAL IN, major_thickness: 0.035 INCHES NOMINAL IN, surface_treatment: PHOSPHATE. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-150-5774, 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
5555-18SPP
NSN: 5325-01-150-5774
FSC: 5325 — Fastening Devices
CAGE: 79136 — TRUARC COMPANY LLC DBA WALDES TRUARC (USA)
SPECIFICATIONS
materialSTEEL COMP 1060
ring_styleEXTERNAL
usage_designEXTERNAL
inside_diameter0.181 INCHES NOMINAL IN
major_thickness0.035 INCHES NOMINAL IN
surface_treatmentPHOSPHATE
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationAISI 1060 ASSN STD SINGLE MATERIAL RESPONSE
NSN5325-01-150-5774
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5555-18SPP · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI 1060 ASSN STD SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
MAJOR THICKNESS: 0.035 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.181 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
RING STYLE: EXTERNAL
•
SURFACE TREATMENT: PHOSPHATE
TECHNICAL CHARACTERISTICS
USAGE DESIGNEXTERNAL
MATERIAL DOCUMENT AND CLASSIFICATIONAISI 1060 ASSN STD SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MAJOR THICKNESS0.035 INCHES NOMINAL IN
INSIDE DIAMETER0.181 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLEEXTERNAL
SURFACE TREATMENTPHOSPHATE
MATERIALSTEEL COMP 1060
SUBSTITUTES & CROSS-REFERENCES 1
5555-18Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 5555-18SPP?
5555-18SPP is a RING,RETAINING.
What parts can replace 5555-18SPP?
There is 1 known substitute for 5555-18SPP: 5555-18. Substitute compatibility should be verified for your specific system.
What is the NSN for 5555-18SPP?
5555-18SPP is cataloged in the U.S. Government catalog under NSN 5325-01-150-5774. 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.