PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4-00746-0Body,valve

Spence Engineering Co Inc Dba Nicholson Steam Trap · NSN 4820-01-050-1631 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-050-1631 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-050-1631. Primary manufacturer part number: 4-00746-0.
Features
  • Body,valve — FSC 4820
  • 3 verified cross-references
  • Primary manufacturer: Spence Engineering Co Inc Dba Nicholson Steam Trap
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Body,valve, cataloged under National Stock Number 4820-01-050-1631, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Spence Engineering Co Inc Dba Nicholson Steam Trap. This item has 3 commercial cross-references from 1 manufacturer, 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
NSN4820-01-050-1631
Primary Part Number4-00746-0
Item NameBody,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSpence Engineering Co Inc Dba Nicholson Steam Trap
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5340-00-050-1563179380 INTERCHANGEABLE
Plug,expansion
Chrysler Realty Company Llc Dba Daimler Chrysler
5920-00-142-74481019301PC2 INTERCHANGEABLE
Fuseholder,block
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5950-00-231-156740-12292 INTERCHANGEABLE
Transformer,power
Magnetic Components Inc
5360-00-821-88404525 INTERCHANGEABLE
Spring,helical,compression
Leslie Controls, Inc. Dba Leslie Controls Inc
5935-01-021-31217513NP INTERCHANGEABLE
Connector,plug,electrical
Bryant Electric
4820-01-050-16604-05328-0 INTERCHANGEABLE
Stem,fluid Valve
Spence Engineering Co Inc Dba Nicholson Steam Trap
4820-01-050-35084-04395-0 INTERCHANGEABLE
Ring,guide
Spence Engineering Co Inc Dba Nicholson Steam Trap
4030-01-142-483445-25 INTERCHANGEABLE
Shackle
Schaefer Marine, Inc.
5950-01-153-93953461645 INTERCHANGEABLE
Transformer,power
Raytheon Company Dba Raytheon
6530-01-233-44044525 INTERCHANGEABLE
Indicator,sterilization
Pymah Corp
Cross-Reference Index
Part NumberManufacturer
4-00746-0 PRIMARY Spence Engineering Co Inc Dba Nicholson Steam Trap (USA)
4525 Spence Engineering Co Inc Dba Nicholson Steam Trap (USA)
9906-A Spence Engineering Co Inc Dba Nicholson Steam Trap (USA)
Related Parts
5340-00-050-1563INTERCHANGEABLE
PLUG,EXPANSION
179380
5920-00-142-7448INTERCHANGEABLE
FUSEHOLDER,BLOCK
1019301PC2
5950-00-231-1567INTERCHANGEABLE
TRANSFORMER,POWER
40-12292
5360-00-821-8840INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
4525
5935-01-021-3121INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
7513NP
4820-01-050-1660INTERCHANGEABLE
STEM,FLUID VALVE
4-05328-0
4820-01-050-3508INTERCHANGEABLE
RING,GUIDE
4-04395-0
4030-01-142-4834INTERCHANGEABLE
SHACKLE
45-25
5950-01-153-9395INTERCHANGEABLE
TRANSFORMER,POWER
3461645
6530-01-233-4404INTERCHANGEABLE
INDICATOR,STERILIZATION
4525
6625-01-573-6038INTERCHANGEABLE
ABSORBER,RADIO FREQUENCY RADIATI
4525

Frequently Asked Questions

What is NSN 4820-01-050-1631?

NSN 4820-01-050-1631 is a Body,valve, manufactured by Spence Engineering Co Inc Dba Nicholson Steam Trap, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-050-1631?

NSN 4820-01-050-1631 has 3 cross-referenced part numbers: 4-00746-0 (Spence Engineering Co Inc Dba Nicholson Steam Trap), 4525 (Spence Engineering Co Inc Dba Nicholson Steam Trap), 9906-A (Spence Engineering Co Inc Dba Nicholson Steam Trap).

What NSN replaces 4820-01-050-1631?

There are 11 known substitutes for 4820-01-050-1631: 5340-00-050-1563, 5920-00-142-7448, 5950-00-231-1567 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4-00746-0?

Key specifications for 4-00746-0: Special Features: GUN METAL PER MIL-M016576(CANCELLED);5-3/16 IN. LG;FOUR 9/16 IN. DIA BOLT HOLES IN EA FLANGE;STRAIGHT-THRU FLOW;EIGHT 3/8 IN. DIA BOLT HOLES IN CONNECTING BONNET FLANGE IN. 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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