PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6537Guide,valve Stem

Lawler Manufacturing Company, Inc. · NSN 4820-01-185-4468 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-185-4468 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-185-4468. Primary manufacturer part number: 6537.
Features
  • Guide,valve Stem — FSC 4820
  • Material: NICKEL ALLOY
  • Bb End Shank Diameter: 0.907 INCHES NOMINAL IN
  • Bore Counterbore: NOT INCLUDED
  • Style Designator: PLAIN, SHOULDERED
  • Major Diameter Length: 1.032 INCHES NOMINAL IN
  • Bore Countersink: NOT INCLUDED
  • Outside Diameter: 0.938 INCHES MINIMUM AND 0.939 INCHES MAXIMUM IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy construction
General Description

The Guide,valve Stem, cataloged under National Stock Number 4820-01-185-4468, 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 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-185-4468
Primary Part Number6537
Item NameGuide,valve Stem
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLawler Manufacturing Company, Inc.
StatusACTIVE
MaterialNICKEL ALLOY
Bb End Shank Diameter0.907 INCHES NOMINAL IN
Bore CounterboreNOT INCLUDED
Style DesignatorPLAIN, SHOULDERED
Major Diameter Length1.032 INCHES NOMINAL IN
Bore CountersinkNOT INCLUDED
Outside Diameter0.938 INCHES MINIMUM AND 0.939 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5355-00-093-68176537 INTERCHANGEABLE
Stop,adjustable
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
1680-00-211-4697 INTERCHANGEABLE
Stop,fore and Aft T
4310-00-413-28778161 INTERCHANGEABLE
Ring Set,piston
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
5330-00-543-613371996 INTERCHANGEABLE
Gasket
L3harris Technologies, Inc Div Space & Airborne Systems
3020-00-573-74936537 INTERCHANGEABLE
Gear Cluster
Meggitt North Hollywood Inc
5355-00-644-143138-7308-221-00-3-00 INTERCHANGEABLE
Knob
Cosmo Corporation
5331-00-654-351924906 INTERCHANGEABLE
O-Ring
Napco International Llc Dba Napco International Inc
5940-00-935-00731417A9 INTERCHANGEABLE
Terminal,stud
Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect
5950-01-069-7123 INTERCHANGEABLE
Coil,radio Frequency
5120-01-669-147871996 INTERCHANGEABLE
Screwdriver Attachment Set,socke
Wiha Quality Tools
Cross-Reference Index
Part NumberManufacturer
71996 FIND 29 Lawler Manufacturing Company, Inc. (USA)
71996 Lawler Manufacturing Company, Inc. (USA)
6537 PRIMARY Lawler Manufacturing Company, Inc. (USA)
Related Parts
5355-00-093-6817INTERCHANGEABLE
STOP,ADJUSTABLE
6537
1680-00-211-4697INTERCHANGEABLE
STOP,FORE AND AFT T
4310-00-413-2877INTERCHANGEABLE
RING SET,PISTON
8161
5330-00-543-6133INTERCHANGEABLE
GASKET
71996
3020-00-573-7493INTERCHANGEABLE
GEAR CLUSTER
6537
5355-00-644-1431INTERCHANGEABLE
KNOB
38-7308-221-00-3-00
5331-00-654-3519INTERCHANGEABLE
O-RING
24906
5940-00-935-0073INTERCHANGEABLE
TERMINAL,STUD
1417A9
5950-01-069-7123INTERCHANGEABLE
COIL,RADIO FREQUENCY
5120-01-669-1478INTERCHANGEABLE
SCREWDRIVER ATTACHMENT SET,SOCKE
71996

Frequently Asked Questions

What is NSN 4820-01-185-4468?

NSN 4820-01-185-4468 is a Guide,valve Stem, manufactured by Lawler Manufacturing Company, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-185-4468?

NSN 4820-01-185-4468 has 3 cross-referenced part numbers: 71996 FIND 29 (Lawler Manufacturing Company, Inc.), 71996 (Lawler Manufacturing Company, Inc.), 6537 (Lawler Manufacturing Company, Inc.).

What NSN replaces 4820-01-185-4468?

There are 10 known substitutes for 4820-01-185-4468: 5355-00-093-6817, 1680-00-211-4697, 4310-00-413-2877 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6537?

Key specifications for 6537: Material: NICKEL ALLOY; Bb End Shank Diameter: 0.907 INCHES NOMINAL IN; Bore Counterbore: NOT INCLUDED; Style Designator: PLAIN, SHOULDERED. 8 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com