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Technical Data Sheet
PartsTable / COMPONENT / 5191312
5191312 ✓ 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, end_style: VERTEX CENTER OR ABOVE, ring_style: STRAIGHT GAP, usage_design: EXTERNAL, inside_diameter: 0.382 INCHES MINIMUM AND 0.394 INCHES MAXIMUM IN, major_thickness: 0.047 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-426-1774, 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
5191312
NSN: 5325-00-426-1774
FSC: 5325
CAGE: 72582 — ROLLS-ROYCE SOLUTIONS AMERICA INC (USA)
SPECIFICATIONS
materialSTEEL
end_styleVERTEX CENTER OR ABOVE
ring_styleSTRAIGHT GAP
usage_designEXTERNAL
inside_diameter0.382 INCHES MINIMUM AND 0.394 INCHES MAXIMUM IN
major_thickness0.047 INCHES NOMINAL IN
outside_diameter0.570 INCHES MINIMUM AND 0.582 INCHES MAXIMUM IN
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating46.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
cross-sectional_shape_styleRECTANGULAR
NSN5325-00-426-1774
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5191312 · 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
•
RING STYLE: STRAIGHT GAP
•
OUTSIDE DIAMETER: 0.570 INCHES MINIMUM AND 0.582 INCHES MAXIMUM IN
•
MATERIAL: STEEL
•
MATERIAL HARDNESS RATING: 46.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
INSIDE DIAMETER: 0.382 INCHES MINIMUM AND 0.394 INCHES MAXIMUM IN
•
END STYLE: VERTEX CENTER OR ABOVE
TECHNICAL CHARACTERISTICS (FLIS)
USAGE DESIGNEXTERNAL
RING STYLESTRAIGHT GAP
OUTSIDE DIAMETER0.570 INCHES MINIMUM AND 0.582 INCHES MAXIMUM IN
MATERIALSTEEL
MATERIAL HARDNESS RATING46.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
CASEHARDENING INDICATORNOT CASEHARDENED
INSIDE DIAMETER0.382 INCHES MINIMUM AND 0.394 INCHES MAXIMUM IN
END STYLEVERTEX CENTER OR ABOVE
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MAJOR THICKNESS0.047 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
2-33-81Interchangeable
interchangeable cross-reference
interchangeable
7370371Interchangeable
interchangeable cross-reference
interchangeable
A35B1228Interchangeable
interchangeable cross-reference
interchangeable
GGG-D-296 TY1SEAInterchangeable
interchangeable cross-reference
interchangeable
50404Interchangeable
interchangeable cross-reference
interchangeable
GGG-D-296Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5191312?
5191312 is a RING,RETAINING.
What parts can replace 5191312?
There are 19 known substitutes for 5191312: 2-33-81, 7370371, A35B1228 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5191312?
5191312 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-426-1774. 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