PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3951Cap,filler Opening

Wisco Products Inc · NSN 2590-01-058-7764 · FSC 2590 · No Item Name Available
Verified by PartsTable
NSN 2590-01-058-7764 — this item is cataloged by the U.S. Government under National Stock Number 2590-01-058-7764. Primary manufacturer part number: 3951.
Features
  • Cap,filler Opening — FSC 2590
  • Features Provided: BREATHER HOLE
  • Retaining Device Length: 7.500 INCHES NOMINAL IN
  • Retaining Device Type: CHAIN
  • Surface Treatment Document and Classification: QQ-P-416,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Surface Treatment: CADMIUM OVERALL
  • Style Designator: OUTSIDE CAM TYPE
  • Cam Quantity: 3
Applications
  • Applications requiring Steel Overall construction
General Description

The Cap,filler Opening, cataloged under National Stock Number 2590-01-058-7764, is classified within Federal Supply Class 2590 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Wisco Products Inc. Government technical data includes 12 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2590-01-058-7764
Primary Part Number3951
Item NameCap,filler Opening
FSC / FSG2590 / 25 — No Item Name Available
ManufacturerWisco Products Inc
StatusACTIVE
Features ProvidedBREATHER HOLE
Retaining Device Length7.500 INCHES NOMINAL IN
Retaining Device TypeCHAIN
Surface Treatment Document and ClassificationQQ-P-416,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Surface TreatmentCADMIUM OVERALL
Style DesignatorOUTSIDE CAM TYPE
Cam Quantity3
System for Which DesignedNONPRESSURIZED
Outside Diameter4.500 INCHES NOMINAL IN
Accommodation TypeHANDLE END GRIPPING
MaterialSTEEL OVERALL
Filler Neck Diameter for Which Designed3.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5930-00-238-42631130604 INTERCHANGEABLE
Switch,toggle
Westinghouse Electric Corp
5360-00-360-68963951 INTERCHANGEABLE
Spring,helical,compression
Borg-Warner Corp
3010-00-362-29513951 INTERCHANGEABLE
Pressure Plate Assembly,clutch
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
6105-01-182-9447 INTERCHANGEABLE
Motor,alternating Current
5930-01-221-05193951-8 INTERCHANGEABLE
Switch,sensitive
Atlas Metal Industries Inc
5950-01-293-7438149908023 INTERCHANGEABLE
Transformer,pulse
Eaton Corporation
4210-01-466-54063951 INTERCHANGEABLE
Nozzle,fire Equipment
Akron Brass Company
5940-01-503-86313951 INTERCHANGEABLE
Terminal,lug
Spc Technology - Newark
5340-01-608-66003951 INTERCHANGEABLE
Hardware Kit,mechanic Equipment
Bmi Defense Systems, Inc
5995-01-628-5198 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Cross-Reference Index
Part NumberManufacturer
B3951 Wisco Products Inc (USA)
3951 PRIMARY Wisco Products Inc (USA)
Related Parts
5930-00-238-4263INTERCHANGEABLE
SWITCH,TOGGLE
1130604
5360-00-360-6896INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
3951
3010-00-362-2951INTERCHANGEABLE
PRESSURE PLATE ASSEMBLY,CLUTCH
3951
6105-01-182-9447INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
5930-01-221-0519INTERCHANGEABLE
SWITCH,SENSITIVE
3951-8
5950-01-293-7438INTERCHANGEABLE
TRANSFORMER,PULSE
149908023
4210-01-466-5406INTERCHANGEABLE
NOZZLE,FIRE EQUIPMENT
3951
5940-01-503-8631INTERCHANGEABLE
TERMINAL,LUG
3951
5340-01-608-6600INTERCHANGEABLE
HARDWARE KIT,MECHANIC EQUIPMENT
3951
5995-01-628-5198INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E

Frequently Asked Questions

What is NSN 2590-01-058-7764?

NSN 2590-01-058-7764 is a Cap,filler Opening, manufactured by Wisco Products Inc, classified under FSC 2590 (No Item Name Available). Status: active.

What are the part numbers for NSN 2590-01-058-7764?

NSN 2590-01-058-7764 has 2 cross-referenced part numbers: B3951 (Wisco Products Inc), 3951 (Wisco Products Inc).

What NSN replaces 2590-01-058-7764?

There are 10 known substitutes for 2590-01-058-7764: 5930-00-238-4263, 5360-00-360-6896, 3010-00-362-2951 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3951?

Key specifications for 3951: Features Provided: BREATHER HOLE; Overall Height: 1.560 INCHES NOMINAL IN; Retaining Device Length: 7.500 INCHES NOMINAL IN; Retaining Device Type: CHAIN. 13 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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