PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 163B5559
163B5559 ✓ 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: SPECIAL FLAT, usage_design: INTERNAL, inside_diameter: 0.927 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN, major_thickness: 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN, outside_diameter: 1.095 INCHES MINIMUM AND 1.105 INCHES MAXIMUM 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 5325-00-269-0764, 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
163B5559
NSN: 5325-00-269-0764
FSC: 5325
CAGE: 05606 — GENERAL DYNAMICS-OTS, INC. DIV ORDNANCE AND TACTICAL SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL
ring_styleSPECIAL FLAT
usage_designINTERNAL
inside_diameter0.927 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
major_thickness0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
outside_diameter1.095 INCHES MINIMUM AND 1.105 INCHES MAXIMUM IN
surface_treatmentNICKEL
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleDOUBLE OVAL
NSN5325-00-269-0764
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 163B5559 · 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
•
INSIDE DIAMETER: 0.927 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
•
RING STYLE: SPECIAL FLAT
•
USAGE DESIGN: INTERNAL
•
SURFACE TREATMENT: NICKEL
•
MATERIAL: STEEL
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
MAJOR THICKNESS: 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: DOUBLE OVAL
TECHNICAL CHARACTERISTICS (FLIS)
INSIDE DIAMETER0.927 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
RING STYLESPECIAL FLAT
USAGE DESIGNINTERNAL
SURFACE TREATMENTNICKEL
MATERIALSTEEL
CASEHARDENING INDICATORNOT CASEHARDENED
MAJOR THICKNESS0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLEDOUBLE OVAL
OUTSIDE DIAMETER1.095 INCHES MINIMUM AND 1.105 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
149-897Interchangeable
interchangeable cross-reference
interchangeable
324W55-1Interchangeable
interchangeable cross-reference
interchangeable
9NBC1419YZPMILG3278AInterchangeable
interchangeable cross-reference
interchangeable
9NCB1419YZPANG25Interchangeable
interchangeable cross-reference
interchangeable
9NBC1419YZPInterchangeable
interchangeable cross-reference
interchangeable
2909Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 163B5559?
163B5559 is a RING,RETAINING.
What parts can replace 163B5559?
There are 15 known substitutes for 163B5559: 149-897, 324W55-1, 9NBC1419YZPMILG3278A and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 163B5559?
163B5559 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-269-0764. 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