PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

VH-56Ring,retaining

Spirolox Inc · NSN 5325-00-953-3877 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-953-3877 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-953-3877. Primary manufacturer part number: VH-56.
Features
  • Ring,retaining — FSC 5325
  • 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
Applications
  • Applications requiring Steel construction
General Description

The Ring,retaining, cataloged under National Stock Number 5325-00-953-3877, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Spirolox Inc. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5325-00-953-3877
Primary Part NumberVH-56
Item NameRing,retaining
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerSpirolox Inc
StatusACTIVE
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
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
4820-00-457-1599RK119B INTERCHANGEABLE
Parts Kit,pressure Regulating VA
Parker-Hannifin Corporation Dba Pneumatic North America Div Pneumatics North America
1005-00-464-1279054540001 INTERCHANGEABLE
Rod,extractor
Smith & Wesson Sales Company
5365-00-664-54445454 INTERCHANGEABLE
Shim
Ametek Inc Lamb Electric Div
5930-00-824-3909V71041NSR05N30C3MGC INTERCHANGEABLE
Switch,rotary
Radio Switch Corp
4820-00-844-674412815 INTERCHANGEABLE
Cock,drain
Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling
5950-00-878-7957WM-5454 INTERCHANGEABLE
Transformer,power
Magnetic Components Inc
5330-00-957-27265454 INTERCHANGEABLE
Gasket
Parker-Hannifin Corp Div Sporlan Division
4820-00-968-854970663902 INTERCHANGEABLE
Parts Kit,valve
Hydro-Aire Aerospace Corp
4240-01-210-57825454 INTERCHANGEABLE
Hose,extension,resp
E. D. Bullard Company Dba Ed Bullard Co
5920-01-290-0646 INTERCHANGEABLE
Fuse,cartridge
Cross-Reference Index
Part NumberManufacturer
5454 Eaton Aerospace, Llc Dba Jackson South (USA)
VH-56 PRIMARY Spirolox Inc (USA)
5454 Eaton Aerospace, Llc Dba Jackson South (USA)
UR56 Spirolox Inc (USA)
Related Parts
4820-00-457-1599INTERCHANGEABLE
PARTS KIT,PRESSURE REGULATING VA
RK119B
1005-00-464-1279INTERCHANGEABLE
ROD,EXTRACTOR
054540001
5365-00-664-5444INTERCHANGEABLE
SHIM
5454
5930-00-824-3909INTERCHANGEABLE
SWITCH,ROTARY
V71041NSR05N30C3MGC
4820-00-844-6744INTERCHANGEABLE
COCK,DRAIN
12815
5950-00-878-7957INTERCHANGEABLE
TRANSFORMER,POWER
WM-5454
5330-00-957-2726INTERCHANGEABLE
GASKET
5454
4820-00-968-8549INTERCHANGEABLE
PARTS KIT,VALVE
70663902
4240-01-210-5782INTERCHANGEABLE
HOSE,EXTENSION,RESP
5454
5920-01-290-0646INTERCHANGEABLE
FUSE,CARTRIDGE
5305-01-479-5883INTERCHANGEABLE
SCREW,MACHINE
5454

Frequently Asked Questions

What is NSN 5325-00-953-3877?

NSN 5325-00-953-3877 is a Ring,retaining, manufactured by Spirolox Inc, classified under FSC 5325 (No Item Name Available). Status: active.

What are the part numbers for NSN 5325-00-953-3877?

NSN 5325-00-953-3877 has 4 cross-referenced part numbers: 5454 (Eaton Aerospace, Llc Dba Jackson South), VH-56 (Spirolox Inc), 5454 (Eaton Aerospace, Llc Dba Jackson South), UR56 (Spirolox Inc).

What NSN replaces 5325-00-953-3877?

There are 11 known substitutes for 5325-00-953-3877: 4820-00-457-1599, 1005-00-464-1279, 5365-00-664-5444 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of VH-56?

Key specifications for VH-56: 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. 9 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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