PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2955Disk,valve

Lawler Manufacturing Company, Inc. · NSN 4820-00-073-0509 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-073-0509 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-073-0509. Primary manufacturer part number: 2955.
Features
  • Disk,valve — FSC 4820
  • Material: STEEL CORROSION RESISTING
  • Taper Length: 2.057 INCHES NOMINAL IN
  • Nominal Thread Size: 0.750 INCHES IN
  • Taper Minor Diameter: 3.489 INCHES NOMINAL IN
  • Taper Major Diameter: 3.489 INCHES NOMINAL IN
  • Style Designator: SOLID WEDGE
  • Thread Series Designator: UNF
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-00-073-0509, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Lawler Manufacturing Company, Inc.. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-073-0509
Primary Part Number2955
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLawler Manufacturing Company, Inc.
StatusACTIVE
MaterialSTEEL CORROSION RESISTING
Taper Length2.057 INCHES NOMINAL IN
Nominal Thread Size0.750 INCHES IN
Taper Minor Diameter3.489 INCHES NOMINAL IN
Taper Major Diameter3.489 INCHES NOMINAL IN
Style DesignatorSOLID WEDGE
Thread Series DesignatorUNF
Thread Class2B
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5120-00-032-94562955 INTERCHANGEABLE
Wrench
Allison Transmission Inc Dba Allison Transmission, Inc
3110-00-100-0714 INTERCHANGEABLE
Cone and Rollers,tapered Roller
5950-00-830-3169 INTERCHANGEABLE
Coil,radio Frequency
3110-00-837-51122955 INTERCHANGEABLE
Bearing,ball,airframe
Triumph Controls, Llc Dba Triumph Controls, Llc
2530-00-873-2853868443R91 INTERCHANGEABLE
Parts Kit,hydraulic Brake Master
Navistar Intl Corp Truck Br Ohio Plant
1730-01-022-5194 INTERCHANGEABLE
Jack,hydraulic,tripod
6625-01-124-7512 INTERCHANGEABLE
Ohmmeter
6625-01-247-70742955 INTERCHANGEABLE
Test Set,radio
Viavi Solutionsllc
6510-01-365-4732 INTERCHANGEABLE
Dressing Cover
5998-01-395-90852955 INTERCHANGEABLE
Printed Circuit Board
International Business Machines Corp Parts Order Center Dept E - 54
Cross-Reference Index
Part NumberManufacturer
2955 Lawler Manufacturing Company, Inc. (USA)
2955 L Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
Related Parts
5120-00-032-9456INTERCHANGEABLE
WRENCH
2955
3110-00-100-0714INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
5950-00-830-3169INTERCHANGEABLE
COIL,RADIO FREQUENCY
3110-00-837-5112INTERCHANGEABLE
BEARING,BALL,AIRFRAME
2955
2530-00-873-2853INTERCHANGEABLE
PARTS KIT,HYDRAULIC BRAKE MASTER
868443R91
1730-01-022-5194INTERCHANGEABLE
JACK,HYDRAULIC,TRIPOD
6625-01-124-7512INTERCHANGEABLE
OHMMETER
6625-01-247-7074INTERCHANGEABLE
TEST SET,RADIO
2955
6510-01-365-4732INTERCHANGEABLE
DRESSING COVER
5998-01-395-9085INTERCHANGEABLE
PRINTED CIRCUIT BOARD
2955
5310-01-551-0951INTERCHANGEABLE
WASHER,LOCK
2955
2590-01-585-9566INTERCHANGEABLE
PAD,CUSHIONING
2955

Frequently Asked Questions

What is NSN 4820-00-073-0509?

NSN 4820-00-073-0509 is a Disk,valve, manufactured by Lawler Manufacturing Company, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-073-0509?

NSN 4820-00-073-0509 has 2 cross-referenced part numbers: 2955 (Lawler Manufacturing Company, Inc.), 2955 L (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).

What NSN replaces 4820-00-073-0509?

There are 12 known substitutes for 4820-00-073-0509: 5120-00-032-9456, 3110-00-100-0714, 5950-00-830-3169 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2955?

Key specifications for 2955: Material: STEEL CORROSION RESISTING; Taper Length: 2.057 INCHES NOMINAL IN; Nominal Thread Size: 0.750 INCHES IN; Taper Minor Diameter: 3.489 INCHES NOMINAL IN. 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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