PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

10643Parts Kit,valve

Watson Mcdaniel Co · NSN 4820-01-275-6995 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-275-6995 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-275-6995. Primary manufacturer part number: 10643.
Features
  • Parts Kit,valve — FSC 4820
  • Nonsupply Items and Quantities: PISTON BODY 1; RINGS 2; STEM 1
  • Component Quantity: 4
  • 2 verified cross-references
  • Primary manufacturer: Watson Mcdaniel Co
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Parts Kit,valve, cataloged under National Stock Number 4820-01-275-6995, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Watson Mcdaniel Co. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN4820-01-275-6995
Primary Part Number10643
Item NameParts Kit,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerWatson Mcdaniel Co
StatusACTIVE
Nonsupply Items and QuantitiesPISTON BODY 1; RINGS 2; STEM 1
Component Quantity4
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3010-00-412-235810643 INTERCHANGEABLE
Insert,flexible Coupling
Rexnord Industries, Llc Div Couplings Division
5998-00-420-409310643 INTERCHANGEABLE
Circuit Card Assembly
Weigh-Tronix Inc
5961-00-451-5915 INTERCHANGEABLE
Mounting Kit,transi
5310-00-545-8402 INTERCHANGEABLE
Washer,flat
3040-00-830-189510643 INTERCHANGEABLE
Connecting Link,rigid
Grimes Aerospace Company
6685-00-845-2190138000 INTERCHANGEABLE
Gage,vacuum,indicating
Ametek, Inc. Div Aerospace & Defense
3040-00-939-1846CA030360 INTERCHANGEABLE
Lever,remote Control
Evans Tempcon Michigan, Llc
5950-00-999-7963995559-9 INTERCHANGEABLE
Transformer,radio Frequency
Raytheon Company Div Rmd Strategic
6630-01-190-2629 INTERCHANGEABLE
Valve,bubbler
4940-01-298-555710643 INTERCHANGEABLE
Adapter,mechanical
Usi Inc
Cross-Reference Index
Part NumberManufacturer
10643 PRIMARY Watson Mcdaniel Co (USA)
10643-1 AND 10643-2 Watson Mcdaniel Co (USA)
Related Parts
3010-00-412-2358INTERCHANGEABLE
INSERT,FLEXIBLE COUPLING
10643
5998-00-420-4093INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
10643
5961-00-451-5915INTERCHANGEABLE
MOUNTING KIT,TRANSI
5310-00-545-8402INTERCHANGEABLE
WASHER,FLAT
3040-00-830-1895INTERCHANGEABLE
CONNECTING LINK,RIGID
10643
6685-00-845-2190INTERCHANGEABLE
GAGE,VACUUM,INDICATING
138000
3040-00-939-1846INTERCHANGEABLE
LEVER,REMOTE CONTROL
CA030360
5950-00-999-7963INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
995559-9
6630-01-190-2629INTERCHANGEABLE
VALVE,BUBBLER
4940-01-298-5557INTERCHANGEABLE
ADAPTER,MECHANICAL
10643
4730-01-399-6308INTERCHANGEABLE
FITTING,LUBRICATION
10643
6525-01-571-7198INTERCHANGEABLE
SPECTACLES,PROTECTIVE,COMPUTED T
453567069641

Frequently Asked Questions

What is NSN 4820-01-275-6995?

NSN 4820-01-275-6995 is a Parts Kit,valve, manufactured by Watson Mcdaniel Co, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-275-6995?

NSN 4820-01-275-6995 has 2 cross-referenced part numbers: 10643 (Watson Mcdaniel Co), 10643-1 AND 10643-2 (Watson Mcdaniel Co).

What NSN replaces 4820-01-275-6995?

There are 12 known substitutes for 4820-01-275-6995: 3010-00-412-2358, 5998-00-420-4093, 5961-00-451-5915 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 10643?

Key specifications for 10643: Nonsupply Items and Quantities: PISTON BODY 1; RINGS 2; STEM 1; Component Quantity: 4. 2 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