PartsTable TECHNICAL DATA SHEET

JULY 2026Technical Data Sheet

261-01Seat,valve

Name: 261-01
SKU: 4820-01-200-0835

Trac Regulator Co., Inc. Dba Trac Regulator Co Inc · NSN 4820-01-200-0835 · FSC 4820 · No Item Name Available

Verified by PartsTable

NSN 4820-01-200-0835 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-200-0835. Primary manufacturer part number: 261-01.

4820-01-200-0835 — No Item Name Available illustration

Features

Seat,valve — FSC 4820
Style Designator: PLAIN
Material: COPPER ALLOY OR NICKEL ALLOY OVERALL
5 verified cross-references
Primary manufacturer: Trac Regulator Co., Inc. Dba Trac Regulator Co Inc

Applications

Flow control in piping systems
Pressure regulation
Steam and fluid isolation
Applications requiring Copper Alloy or Nickel Alloy Overall construction

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-200-0835, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references 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: Cancelled.

Technical Specifications

Parameter	Value
NSN	4820-01-200-0835
Primary Part Number	261-01
Item Name	Seat,valve
FSC / FSG	4820 / 48 — No Item Name Available
Manufacturer	Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Status	CANCELLED
Style Designator	PLAIN
Material	COPPER ALLOY OR NICKEL ALLOY OVERALL

Lifecycle & Compliance

Acquisition Status	CANCELLED
HAZMAT	No

⇄ Verified Substitutes 8

5335-00-054-52732610-1 INTERCHANGEABLE

Wire Fabric

Oklahoma Steel & Wire Co Inc

5110-00-186-4203 INTERCHANGEABLE

Reamer,hand

5945-00-549-9712SMB177071 INTERCHANGEABLE

Relay,electromagnetic

Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir

5930-00-847-200826101 INTERCHANGEABLE

Switch,sensitive

Barksdale, Inc

6750-01-016-2222148-110 INTERCHANGEABLE

Fixing Bath,photographic

Molecular Gps Enterprises Dba Clayton Chemical

5998-01-310-211126-10-1 INTERCHANGEABLE

Holder,electrical Card

Schroff Inc

7830-01-670-2010 INTERCHANGEABLE

Dumbbell,gymnastic

5325-01-718-411526101 INTERCHANGEABLE

Insert,screw Thread

Jergens Inc Div Tooling Components Division

Cross-Reference Index

Part Number	Manufacturer
40205 PIECE 19	Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
261-1	Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
261-01 PRIMARY	Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40205	Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40473 PIECE 19	Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)

Related Parts

5335-00-054-5273INTERCHANGEABLE

WIRE FABRIC

2610-1

5110-00-186-4203INTERCHANGEABLE

REAMER,HAND

5945-00-549-9712INTERCHANGEABLE

RELAY,ELECTROMAGNETIC

SMB177071

5930-00-847-2008INTERCHANGEABLE

SWITCH,SENSITIVE

26101

6750-01-016-2222INTERCHANGEABLE

FIXING BATH,PHOTOGRAPHIC

148-110

5998-01-310-2111INTERCHANGEABLE

HOLDER,ELECTRICAL CARD

26-10-1

7830-01-670-2010INTERCHANGEABLE

DUMBBELL,GYMNASTIC

5325-01-718-4115INTERCHANGEABLE

INSERT,SCREW THREAD

26101

Frequently Asked Questions

What is NSN 4820-01-200-0835?

NSN 4820-01-200-0835 is a Seat,valve, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-01-200-0835?

NSN 4820-01-200-0835 has 5 cross-referenced part numbers: 40205 PIECE 19 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 261-1 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 261-01 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40205 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40473 PIECE 19 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).

What NSN replaces 4820-01-200-0835?

There are 8 known substitutes for 4820-01-200-0835: 5335-00-054-5273, 5110-00-186-4203, 5945-00-549-9712 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 261-01?

Key specifications for 261-01: Style Designator: PLAIN; Material: COPPER ALLOY OR NICKEL ALLOY OVERALL. 2 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-01-200-0835 still in active supply?

NSN 4820-01-200-0835 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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

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