PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

30-21-10-3Cap,knob Attachment Device

Power Dynamics Inc · NSN 5355-01-371-0203 · FSC 5355 · No Item Name Available
Verified by PartsTable
NSN 5355-01-371-0203 — this item is cataloged by the U.S. Government under National Stock Number 5355-01-371-0203. Primary manufacturer part number: 30-21-10-3.
Features
  • Cap,knob Attachment Device — FSC 5355
  • 2 verified cross-references
  • Primary manufacturer: Power Dynamics Inc
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Cap,knob Attachment Device, cataloged under National Stock Number 5355-01-371-0203, is classified within Federal Supply Class 5355 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Power Dynamics Inc. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameCap,knob Attachment Device
FSC / FSG5355 — No Item Name Available (FSG 53)
ManufacturersPower Dynamics Inc (CAGE 60046); Anritsu Instruments Company Div Mbu (CAGE 51275)
Technical Specifications
ParameterValue
NSN5355-01-371-0203
Primary Part Number30-21-10-3
Item NameCap,knob Attachment Device
FSC / FSG5355 / 53 — No Item Name Available
ManufacturerPower Dynamics Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5120-00-224-2504F1808 INTERCHANGEABLE
Key,socket Head Screw
Wilcox Industries Corp. Dba Wilcox Industries Corp
5340-00-369-169015571 INTERCHANGEABLE
Cap,protective,dust and Moisture
Simmonds Precision Products Inc
5330-00-410-3026605020 INTERCHANGEABLE
Seal,plain
Brp Us Inc
2995-00-481-253915571 INTERCHANGEABLE
Connector Assembly,bulkhead
Triumph Controls, Llc Dba Triumph Controls, Llc
6145-00-900-0259 INTERCHANGEABLE
Wire,electrical
3040-01-300-307815571 INTERCHANGEABLE
Gearshaft,spur
Middleby Marshall Inc Conveyor Ovens and Mixers Div
5330-01-372-840715571 INTERCHANGEABLE
Gasket
Grimes Aerospace Company
2040-01-459-16801557-1 INTERCHANGEABLE
Door,cargo
Jered Llc
6515-01-559-494015571 INTERCHANGEABLE
Valve,enteral and Feeding
Viasys Healthcard
1375-01-715-941715571 INTERCHANGEABLE
Demolition Kit,breaching System,
Blasters Tool & Supply Co., Inc.
Cross-Reference Index
Part NumberManufacturer
30-21-10-3 PRIMARY Power Dynamics Inc (USA)
15571 Anritsu Instruments Company Div Mbu (USA)
Related Parts
5120-00-224-2504INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
F1808
5340-00-369-1690INTERCHANGEABLE
CAP,PROTECTIVE,DUST AND MOISTURE
15571
5330-00-410-3026INTERCHANGEABLE
SEAL,PLAIN
605020
2995-00-481-2539INTERCHANGEABLE
CONNECTOR ASSEMBLY,BULKHEAD
15571
6145-00-900-0259INTERCHANGEABLE
WIRE,ELECTRICAL
3040-01-300-3078INTERCHANGEABLE
GEARSHAFT,SPUR
15571
5330-01-372-8407INTERCHANGEABLE
GASKET
15571
2040-01-459-1680INTERCHANGEABLE
DOOR,CARGO
1557-1
6515-01-559-4940INTERCHANGEABLE
VALVE,ENTERAL AND FEEDING
15571
1375-01-715-9417INTERCHANGEABLE
DEMOLITION KIT,BREACHING SYSTEM,
15571

Frequently Asked Questions

What is NSN 5355-01-371-0203?

NSN 5355-01-371-0203 is a Cap,knob Attachment Device, manufactured by Power Dynamics Inc, classified under FSC 5355 (No Item Name Available). Status: active.

What are the part numbers for NSN 5355-01-371-0203?

NSN 5355-01-371-0203 has 2 cross-referenced part numbers: 30-21-10-3 (Power Dynamics Inc), 15571 (Anritsu Instruments Company Div Mbu).

What NSN replaces 5355-01-371-0203?

There are 10 known substitutes for 5355-01-371-0203: 5120-00-224-2504, 5340-00-369-1690, 5330-00-410-3026 and 7 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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