PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1WM3-30LCBonnet Cap

Mark Controls Corp Pacific Valves Div · NSN 4470-00-435-8758 · FSC 4470 · No Item Name Available
Verified by PartsTable
NSN 4470-00-435-8758 — this item is cataloged by the U.S. Government under National Stock Number 4470-00-435-8758. Primary manufacturer part number: 1WM3-30LC.
Features
  • Bonnet Cap — FSC 4470
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
  • Criticality Code Justification: ZZZY
  • 2 verified cross-references
  • Primary manufacturer: Mark Controls Corp Pacific Valves Div
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Bonnet Cap, cataloged under National Stock Number 4470-00-435-8758, is classified within Federal Supply Class 4470 (No Item Name Available) of the Furnace, Steam, Drying, Nuclear Reactors group. The primary manufacturer of record is Mark Controls Corp Pacific Valves Div. 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4470-00-435-8758
Primary Part Number1WM3-30LC
Item NameBonnet Cap
FSC / FSG4470 / 44 — No Item Name Available
ManufacturerMark Controls Corp Pacific Valves Div
StatusACTIVE
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
Criticality Code JustificationZZZY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4820-00-035-689615-381 INTERCHANGEABLE
Seat,valve
Dresser Industries Inc Leroi Div
2940-00-360-395815381 INTERCHANGEABLE
Plunger,oil Pressure
Arvinmeritor Inc
6510-00-926-88821538-1 INTERCHANGEABLE
Adhesive Tape,surgical
3m Company Div Health Care Business
5962-01-096-2133932638-1B INTERCHANGEABLE
Microcircuit,linear
Raytheon Company Dba Raytheon
3110-01-179-4184 INTERCHANGEABLE
Ball,bearing
5120-01-449-406615381 INTERCHANGEABLE
Bender,tube,hand
Ridge Tool Company
3040-01-508-17471-5381 INTERCHANGEABLE
Cylinder Assembly,actuating,line
Hhe Services, Inc.
Cross-Reference Index
Part NumberManufacturer
1WM3-30LC Mark Controls Corp Pacific Valves Div (USA)
15381 Mark Controls Corp Pacific Valves Div (USA)
Related Parts
4820-00-035-6896INTERCHANGEABLE
SEAT,VALVE
15-381
2940-00-360-3958INTERCHANGEABLE
PLUNGER,OIL PRESSURE
15381
6510-00-926-8882INTERCHANGEABLE
ADHESIVE TAPE,SURGICAL
1538-1
5962-01-096-2133INTERCHANGEABLE
MICROCIRCUIT,LINEAR
932638-1B
3110-01-179-4184INTERCHANGEABLE
BALL,BEARING
5120-01-449-4066INTERCHANGEABLE
BENDER,TUBE,HAND
15381
3040-01-508-1747INTERCHANGEABLE
CYLINDER ASSEMBLY,ACTUATING,LINE
1-5381

Frequently Asked Questions

What is NSN 4470-00-435-8758?

NSN 4470-00-435-8758 is a Bonnet Cap, manufactured by Mark Controls Corp Pacific Valves Div, classified under FSC 4470 (No Item Name Available). Status: active.

What are the part numbers for NSN 4470-00-435-8758?

NSN 4470-00-435-8758 has 2 cross-referenced part numbers: 1WM3-30LC (Mark Controls Corp Pacific Valves Div), 15381 (Mark Controls Corp Pacific Valves Div).

What NSN replaces 4470-00-435-8758?

There are 7 known substitutes for 4470-00-435-8758: 4820-00-035-6896, 2940-00-360-3958, 6510-00-926-8882 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1WM3-30LC?

Key specifications for 1WM3-30LC: Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.; Criticality Code Justification: ZZZY. 2 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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