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Technical Data Sheet
PartsTable / COMPONENT / RS-900
RS-900 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, ring_style: SPIRAL, usage_design: EXTERNAL, inside_diameter: 8.637 INCHES MINIMUM AND 8.707 INCHES MAXIMUM IN, major_thickness: 0.082 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN, strength_rating: ERR-060. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-980-3936, 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
RS-900
NSN: 5325-00-980-3936
FSC: 5325
CAGE: 80756 — SPIROLOX INC (USA)
SPECIFICATIONS
materialSTEEL
ring_styleSPIRAL
usage_designEXTERNAL
inside_diameter8.637 INCHES MINIMUM AND 8.707 INCHES MAXIMUM IN
major_thickness0.082 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
strength_ratingERR-060
outside_diameter9.379 INCHES MINIMUM AND 9.461 INCHES MAXIMUM IN
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating40.0 ROCKWELL C MINIMUM AND 51.5 ROCKWELL C MAXIMUM
cross-sectional_shape_styleDOUBLE OVAL
material_document_and_classificationFED STD 66,AISI C1070 THRU C1090 FED STD SINGLE MATERIAL RESPONSE OR SAE 1070 THRU 1090 ASSN STD SINGLE MATERIAL RESPONSE
NSN5325-00-980-3936
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: RS-900 · 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
•
RING STYLE: SPIRAL
•
INSIDE DIAMETER: 8.637 INCHES MINIMUM AND 8.707 INCHES MAXIMUM IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
MATERIAL HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 51.5 ROCKWELL C MAXIMUM
•
MATERIAL: STEEL
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66,AISI C1070 THRU C1090 FED STD SINGLE MATERIAL RESPONSE OR SAE 1070 THRU 1090 ASSN STD SINGLE MATERIAL RESPONSE
•
STRENGTH RATING: ERR-060
•
USAGE DESIGN: EXTERNAL
TECHNICAL CHARACTERISTICS (FLIS)
RING STYLESPIRAL
INSIDE DIAMETER8.637 INCHES MINIMUM AND 8.707 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
MATERIAL HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 51.5 ROCKWELL C MAXIMUM
MATERIALSTEEL
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66,AISI C1070 THRU C1090 FED STD SINGLE MATERIAL RESPONSE OR SAE 1070 THRU 1090 ASSN STD SINGLE MATERIAL RESPONSE
STRENGTH RATINGERR-060
USAGE DESIGNEXTERNAL
CROSS-SECTIONAL SHAPE STYLEDOUBLE OVAL
OUTSIDE DIAMETER9.379 INCHES MINIMUM AND 9.461 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
1890-6Interchangeable
interchangeable cross-reference
interchangeable
179906Interchangeable
interchangeable cross-reference
interchangeable
134MNX2Interchangeable
interchangeable cross-reference
interchangeable
18905Interchangeable
interchangeable cross-reference
interchangeable
MMFB29UG10Interchangeable
interchangeable cross-reference
interchangeable
SS1807Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is RS-900?
RS-900 is a RING,RETAINING.
What parts can replace RS-900?
There are 8 known substitutes for RS-900: 1890-6, 179906, 134MNX2 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for RS-900?
RS-900 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-980-3936. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026