PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A1003Valve,angle

Prestolite Electric Inc · NSN 4820-00-476-9739 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-476-9739 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-476-9739. Primary manufacturer part number: A1003.
Features
  • Valve,angle — FSC 4820
  • Nominal Thread Size: 0.500 INCHES SECOND END0.500 INCHES SECOND END IN
  • Valve Operation Method: MANUALMANUAL
  • Flow Control Device: DISKDISK
  • Nominal Outside Diameter Tube Accommodated: 0.375 INCHES FIRST END IN
  • Connection Type: THREADED INTERNAL PIPE SECOND ENDTHREADED INTERNAL PIPE SECOND END
  • Thread Series Designator: NPT SECOND END
  • Material: COPPER ALLOY STEMPLASTIC FLOW CONTROL DEVICE
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Stemplastic Flow Control Device construction
General Description

The Valve,angle, cataloged under National Stock Number 4820-00-476-9739, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Prestolite Electric Inc. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 4 manufacturers, 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
ParameterValue
NSN4820-00-476-9739
Primary Part NumberA1003
Item NameValve,angle
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerPrestolite Electric Inc
StatusCANCELLED
Nominal Thread Size0.500 INCHES SECOND END0.500 INCHES SECOND END IN
Valve Operation MethodMANUALMANUAL
Flow Control DeviceDISKDISK
Nominal Outside Diameter Tube Accommodated0.375 INCHES FIRST END IN
Connection TypeTHREADED INTERNAL PIPE SECOND ENDTHREADED INTERNAL PIPE SECOND END
Thread Series DesignatorNPT SECOND END
MaterialCOPPER ALLOY STEMPLASTIC FLOW CONTROL DEVICE
Style DesignatorANGLE
Features ProvidedBONNET PACKINGBONNET PACKING
MaterialPLASTIC FLOW CONTROL DEVICECOPPER ALLOY SEAT
Bonnet Attachment MethodTHREADEDTHREADED
Connection StylePLAIN,OPTIONAL END(PIPE) SECOND ENDPLAIN,OPTIONAL END(PIPE) SECOND END
Connection TypeUNTHREADED INTERNAL TUBE FIRST ENDUNTHREADED INTERNAL TUBE FIRST END
Nondefinitive Spec/std Data6A TYPE A
Thread Quantity Per Inch14 SECOND END14 SECOND END
Nominal Pipe Size Accommodated0.500 INCHES SECOND END0.500 INCHES SECOND END IN
Bonnet TypeINSIDE SCREWINSIDE SCREW
Thread DirectionRIGHT-HAND SECOND ENDRIGHT-HAND SECOND END
MaterialCOPPER ALLOY STEM
Furnished Items and Quantity1 FRICTION RING AND 1 WASHER
MaterialCOPPER ALLOY SEATCOPPER ALLOY BODY
Operating Pressure100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Surface TreatmentCHROMIUM
Connection StylePLAIN (TUBE) FIRST ENDPLAIN (TUBE) FIRST END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
3120-00-287-657025J406PC27 INTERCHANGEABLE
Bearing,sleeve
Westinghouse Electric Corp
5999-00-308-2485 INTERCHANGEABLE
Contact,electrical
4730-00-477-6116A100-3 INTERCHANGEABLE
Strainer Element,sediment
Curtiss-Wright Flow Control Corporation Dba Enertech Div Curtiss-Wright Flow Control
5915-00-500-99042271849 INTERCHANGEABLE
Filter,radio Frequency Interfere
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
3040-00-517-1159A1003 INTERCHANGEABLE
Ball Joint
Cablecraft Motion Controls Llc
2530-00-769-64765B15 INTERCHANGEABLE
Cam Brake Operating
Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products
5935-01-340-2718A1003 INTERCHANGEABLE
Socket,plug-in Electronic Compon
Tektronix, Inc.
6250-01-644-3558A1003 INTERCHANGEABLE
Ballast,lamp
Hdt Expeditionary Systems, Inc. Dba Hdt Tactical Systems Inc
Cross-Reference Index
Part NumberManufacturer
R1715AC Brass Craft Mfg Co Sub of Masco Corp (USA)
A1003 PRIMARY Prestolite Electric Inc (USA)
0R1715A Brass Craft Mfg Co Sub of Masco Corp (USA)
A1003 Prestolite Electric Inc (USA)
OR1715AX C PRIMARY Brass Craft Mfg Co Sub of Masco Corp (USA)
R1715A Brass Craft Mfg Co Sub of Masco Corp (USA)
WWP541 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
42G1908 Sears, Roebuck and Co. Dba Sears Div Sears Commercial (USA)
OR1715A C Brass Craft Mfg Co Sub of Masco Corp (USA)
Related Parts
3120-00-287-6570INTERCHANGEABLE
BEARING,SLEEVE
25J406PC27
5999-00-308-2485INTERCHANGEABLE
CONTACT,ELECTRICAL
4730-00-477-6116INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
A100-3
5915-00-500-9904INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
2271849
3040-00-517-1159INTERCHANGEABLE
BALL JOINT
A1003
2530-00-769-6476INTERCHANGEABLE
CAM BRAKE OPERATING
5B15
5935-01-340-2718INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
A1003
6250-01-644-3558INTERCHANGEABLE
BALLAST,LAMP
A1003

Frequently Asked Questions

What is NSN 4820-00-476-9739?

NSN 4820-00-476-9739 is a Valve,angle, manufactured by Prestolite Electric Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-476-9739?

NSN 4820-00-476-9739 has 9 cross-referenced part numbers: R1715AC (Brass Craft Mfg Co Sub of Masco Corp), A1003 (Prestolite Electric Inc), 0R1715A (Brass Craft Mfg Co Sub of Masco Corp), A1003 (Prestolite Electric Inc), OR1715AX C (Brass Craft Mfg Co Sub of Masco Corp) and 4 more.

What NSN replaces 4820-00-476-9739?

There are 8 known substitutes for 4820-00-476-9739: 3120-00-287-6570, 5999-00-308-2485, 4730-00-477-6116 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A1003?

Key specifications for A1003: Nominal Thread Size: 0.500 INCHES SECOND END0.500 INCHES SECOND END IN; Valve Operation Method: MANUALMANUAL; Flow Control Device: DISKDISK; Nominal Outside Diameter Tube Accommodated: 0.375 INCHES FIRST END IN. 25 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-476-9739 still in active supply?

NSN 4820-00-476-9739 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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