PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

P51703Pin,piston

Lexair Inc · NSN 4310-00-446-4419 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-00-446-4419 — this item is cataloged by the U.S. Government under National Stock Number 4310-00-446-4419. Primary manufacturer part number: P51703.
Features
  • Pin,piston — FSC 4310
  • 5 verified cross-references
  • Primary manufacturer: Lexair Inc
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Pin,piston, cataloged under National Stock Number 4310-00-446-4419, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Lexair Inc. This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NamePin,piston
FSC / FSG4310 — No Item Name Available (FSG 43)
ManufacturersWellman Group (CAGE K7018); Lexair Inc (CAGE 56607)
Technical Specifications
ParameterValue
NSN4310-00-446-4419
Primary Part NumberP51703
Item NamePin,piston
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerLexair Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5950-00-064-8976 INTERCHANGEABLE
Transformer,power
6645-00-343-825015657 INTERCHANGEABLE
Clockcase Assy
The Chelsea Clock Llc
5330-00-824-040515657 INTERCHANGEABLE
Gasket
Itt Marlow a Unit of Itt Pumps and Compressors Div
7690-01-185-3208 INTERCHANGEABLE
Marker,identification
5342-01-354-966115657 INTERCHANGEABLE
Cap,filler Opening
Liftking Manufacturing Corp
5340-01-495-932215657 INTERCHANGEABLE
Bracket,mounting
Honeywell International Inc. Dba Honeywell Div Aerospace -Olathe Hums Div
3040-01-518-479615657 INTERCHANGEABLE
Shaft,straight
Climax Portable Machine Tools, Inc
Cross-Reference Index
Part NumberManufacturer
X5008/12/156 ITEM 57 Wellman Group (GBR)
156/57 Wellman Group (GBR)
156 ITEM 57 Wellman Group (GBR)
P51703 PRIMARY Lexair Inc (USA)
X5008/12/156/57 Wellman Group (GBR)
Related Parts
5950-00-064-8976INTERCHANGEABLE
TRANSFORMER,POWER
6645-00-343-8250INTERCHANGEABLE
CLOCKCASE ASSY
15657
5330-00-824-0405INTERCHANGEABLE
GASKET
15657
7690-01-185-3208INTERCHANGEABLE
MARKER,IDENTIFICATION
5342-01-354-9661INTERCHANGEABLE
CAP,FILLER OPENING
15657
5340-01-495-9322INTERCHANGEABLE
BRACKET,MOUNTING
15657
3040-01-518-4796INTERCHANGEABLE
SHAFT,STRAIGHT
15657

Frequently Asked Questions

What is NSN 4310-00-446-4419?

NSN 4310-00-446-4419 is a Pin,piston, manufactured by Lexair Inc, classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-00-446-4419?

NSN 4310-00-446-4419 has 5 cross-referenced part numbers: X5008/12/156 ITEM 57 (Wellman Group), 156/57 (Wellman Group), 156 ITEM 57 (Wellman Group), P51703 (Lexair Inc), X5008/12/156/57 (Wellman Group).

What NSN replaces 4310-00-446-4419?

There are 7 known substitutes for 4310-00-446-4419: 5950-00-064-8976, 6645-00-343-8250, 5330-00-824-0405 and 4 more. Verify interchangeability with system specifications before substitution.

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