PartsTable
Technical Data Sheet
Download PDF

9M187-275 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

9M187-275: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1020 OR STEEL COMP 1025 OR STEEL COMP 1040 OR STEEL COMP 1060 OR STEEL COMP 1074 OR STEEL COMP 1085, ring_style: SPIRAL, usage_design: EXTERNAL, inside_diameter: 2.574 INCHES MINIMUM AND 2.604 INCHES MAXIMUM IN, major_thickness: 0.090 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN, strength_rating: ERR-060. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-147-2491, 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
9M187-275
NSN: 5325-01-147-2491
FSC: 5325 — Fastening Devices
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL COMP 1020 OR STEEL COMP 1025 OR STEEL COMP 1040 OR STEEL COMP 1060 OR STEEL COMP 1074 OR STEEL COMP 1085
ring_styleSPIRAL
usage_designEXTERNAL
inside_diameter2.574 INCHES MINIMUM AND 2.604 INCHES MAXIMUM IN
major_thickness0.090 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
strength_ratingERR-060
outside_diameter3.080 INCHES NOMINAL IN
surface_treatmentCADMIUM AND CHROMATE
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleDOUBLE OVAL
surface_treatment_document_and_classificationQQ-P-416, TYPE 2, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE
NSN5325-01-147-2491
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 9M187-275 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416, TYPE 2, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE
•
STRENGTH RATING: ERR-060
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI 1020 ASSN STD 1ST MATERIAL RESPONSE OR SAE 1020 ASSN STD 1ST MATERIAL RESPONSE OR AISI 1025 ASSN STD 2ND MATERIAL RESPONSE OR SAE 1025 ASSN STD 2ND MATERIAL RESPONSE OR AISI 1040 ASSN STD 3RD MATERIAL RESPONSE OR SAE 1040 ASSN STD 3RD MATERIAL RESPONSE OR AISI 1060 ASSN STD 4TH MATERIAL RESPONSE OR SAE 1060 ASSN STD 4TH MATERIAL RESPONSE OR FED STD 66 FED STD ALL MATERIAL RESPONSES OR MIL-S-46049, COMP 1074 OR 1085 MIL SPEC ALL MATERIAL RESPONSES
•
CROSS-SECTIONAL SHAPE STYLE: DOUBLE OVAL
•
OUTSIDE DIAMETER: 3.080 INCHES NOMINAL IN
•
MAJOR THICKNESS: 0.090 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
•
INSIDE DIAMETER: 2.574 INCHES MINIMUM AND 2.604 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
USAGE DESIGNEXTERNAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416, TYPE 2, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE
STRENGTH RATINGERR-060
MATERIAL DOCUMENT AND CLASSIFICATIONAISI 1020 ASSN STD 1ST MATERIAL RESPONSE OR SAE 1020 ASSN STD 1ST MATERIAL RESPONSE OR AISI 1025 ASSN STD 2ND MATERIAL RESPONSE OR SAE 1025 ASSN STD 2ND MATERIAL RESPONSE OR AISI 1040 ASSN STD 3RD MATERIAL RESPONSE OR SAE 1040 ASSN STD 3RD MATERIAL RESPONSE OR AISI 1060 ASSN STD 4TH MATERIAL RESPONSE OR SAE 1060 ASSN STD 4TH MATERIAL RESPONSE OR FED STD 66 FED STD ALL MATERIAL RESPONSES OR MIL-S-46049, COMP 1074 OR 1085 MIL SPEC ALL MATERIAL RESPONSES
CROSS-SECTIONAL SHAPE STYLEDOUBLE OVAL
OUTSIDE DIAMETER3.080 INCHES NOMINAL IN
MAJOR THICKNESS0.090 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
INSIDE DIAMETER2.574 INCHES MINIMUM AND 2.604 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESPIRAL
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
Ready to buy 9M187-275?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 9M187-275?
9M187-275 is a RING,RETAINING.
What is the NSN for 9M187-275?
9M187-275 is cataloged in the U.S. Government catalog under NSN 5325-01-147-2491. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 9M187-275

✓ 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.