PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21738Rod and Piston Asse

American Bristol Industries Inc. · NSN 4310-01-073-5512 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-01-073-5512 — this item is cataloged by the U.S. Government under National Stock Number 4310-01-073-5512. Primary manufacturer part number: 21738.
Features
  • Rod and Piston Asse — FSC 4310
  • 1 verified cross-reference
  • Primary manufacturer: American Bristol Industries Inc.
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Rod and Piston Asse, cataloged under National Stock Number 4310-01-073-5512, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is American Bristol Industries Inc.. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4310-01-073-5512
Primary Part Number21738
Item NameRod and Piston Asse
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerAmerican Bristol Industries Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5895-00-051-475821738 INTERCHANGEABLE
Duplexer
L3 Technologies, Inc. Div Communication Systems-East
5930-00-091-9254203974-1 INTERCHANGEABLE
Switch,thermostatic
Honeywell International Inc. Div Aerospace - Torrance
4320-00-116-3636Y501830208 INTERCHANGEABLE
Governor,pump,pressure Regulatin
Leslie Controls, Inc. Dba Leslie Controls Inc
3040-00-163-108099121738 INTERCHANGEABLE
Lever,manual Control
Alfa Laval Inc
5325-00-174-985510SA0227 INTERCHANGEABLE
Ring,retaining
Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.)
4730-00-201-959121738-3 INTERCHANGEABLE
Tee,boss
Rockwell Collins Inc
4330-00-212-722531A8188 INTERCHANGEABLE
Cleaner Element
Magnetic Technologies Corp Div Ogallala Electronics Division
5340-01-252-334521738 INTERCHANGEABLE
Plate,mounting
Parker Hannifin Corporation Div Hydraulic Systems Division
Cross-Reference Index
Part NumberManufacturer
21738 PRIMARY American Bristol Industries Inc. (USA)
Related Parts
5895-00-051-4758INTERCHANGEABLE
DUPLEXER
21738
5930-00-091-9254INTERCHANGEABLE
SWITCH,THERMOSTATIC
203974-1
4320-00-116-3636INTERCHANGEABLE
GOVERNOR,PUMP,PRESSURE REGULATIN
Y501830208
3040-00-163-1080INTERCHANGEABLE
LEVER,MANUAL CONTROL
99121738
5325-00-174-9855INTERCHANGEABLE
RING,RETAINING
10SA0227
4730-00-201-9591INTERCHANGEABLE
TEE,BOSS
21738-3
4330-00-212-7225INTERCHANGEABLE
CLEANER ELEMENT
31A8188
5340-01-252-3345INTERCHANGEABLE
PLATE,MOUNTING
21738

Frequently Asked Questions

What is NSN 4310-01-073-5512?

NSN 4310-01-073-5512 is a Rod and Piston Asse, manufactured by American Bristol Industries Inc., classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-01-073-5512?

NSN 4310-01-073-5512 has 1 cross-referenced part number: 21738 (American Bristol Industries Inc.).

What NSN replaces 4310-01-073-5512?

There are 8 known substitutes for 4310-01-073-5512: 5895-00-051-4758, 5930-00-091-9254, 4320-00-116-3636 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21738?

Key specifications for 21738: End Item Identification: THERMAL IMAGERY AND ANCILLARY EQUIPMENT. 1 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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