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Technical Data Sheet
PartsTable / COMPONENT / VH-56
VH-56 ✓ 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, usage_design: INTERNAL, inside_diameter: 0.503 INCHES NOMINAL IN, major_thickness: 0.165 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN, outside_diameter: 0.593 INCHES MINIMUM AND 0.606 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 5325-00-953-3877, 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
VH-56
NSN: 5325-00-953-3877
FSC: 5325
CAGE: 80756 — SPIROLOX INC (USA)
SPECIFICATIONS
materialSTEEL
ring_styleSPECIAL
usage_designINTERNAL
inside_diameter0.503 INCHES NOMINAL IN
major_thickness0.165 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
outside_diameter0.593 INCHES MINIMUM AND 0.606 INCHES MAXIMUM IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationFED STD NO. 66 AISI C1070 THRU C1090 FED STD SINGLE MATERIAL RESPONSE OR SAE 1070 THRU 1090 ASSN STD SINGLE MATERIAL RESPONSE
NSN5325-00-953-3877
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: VH-56 · 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
•
MAJOR THICKNESS: 0.165 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
•
MATERIAL: STEEL
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD NO. 66 AISI C1070 THRU C1090 FED STD SINGLE MATERIAL RESPONSE OR SAE 1070 THRU 1090 ASSN STD SINGLE MATERIAL RESPONSE
•
RING STYLE: SPECIAL
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
INSIDE DIAMETER: 0.503 INCHES NOMINAL IN
•
USAGE DESIGN: INTERNAL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
MAJOR THICKNESS0.165 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
MATERIALSTEEL
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD NO. 66 AISI C1070 THRU C1090 FED STD SINGLE MATERIAL RESPONSE OR SAE 1070 THRU 1090 ASSN STD SINGLE MATERIAL RESPONSE
RING STYLESPECIAL
CASEHARDENING INDICATORNOT CASEHARDENED
INSIDE DIAMETER0.503 INCHES NOMINAL IN
USAGE DESIGNINTERNAL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER0.593 INCHES MINIMUM AND 0.606 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
5454Interchangeable
interchangeable cross-reference
interchangeable
RK119BInterchangeable
interchangeable cross-reference
interchangeable
054540001Interchangeable
interchangeable cross-reference
interchangeable
204-663Interchangeable
interchangeable cross-reference
interchangeable
C-116Interchangeable
interchangeable cross-reference
interchangeable
V71041NSR05N30C3MGCInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is VH-56?
VH-56 is a RING,RETAINING.
What parts can replace VH-56?
There are 15 known substitutes for VH-56: 5454, RK119B, 054540001 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for VH-56?
VH-56 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-953-3877. 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