PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21856-1Mounting Pad,electrical-Electron

Smiths Aerospace, Inc., Electronic Systems-Grand Rapids · NSN 5999-00-928-9775 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-928-9775 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-928-9775. Primary manufacturer part number: 21856-1.
Features
  • Mounting Pad,electrical-Electron — FSC 5999
  • Material: PLASTIC POLYAMIDE NYLON
  • Material Document and Classification: MIL-P-20693 MIL SPEC SINGLE MATERIAL RESPONSE
  • Material: PLASTIC POLYAMIDE NYLON
  • Material Document and Classification: MIL-P-20693 MIL SPEC SINGLE MATERIAL RESPONSE
  • 5 verified cross-references
  • Primary manufacturer: Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
Applications
  • Applications requiring Plastic Polyamide Nylon construction
General Description

The Mounting Pad,electrical-Electron, cataloged under National Stock Number 5999-00-928-9775, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Smiths Aerospace, Inc., Electronic Systems-Grand Rapids. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, 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
NSN5999-00-928-9775
Primary Part Number21856-1
Item NameMounting Pad,electrical-Electron
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerSmiths Aerospace, Inc., Electronic Systems-Grand Rapids
StatusACTIVE
MaterialPLASTIC POLYAMIDE NYLON
Material Document and ClassificationMIL-P-20693 MIL SPEC SINGLE MATERIAL RESPONSE
MaterialPLASTIC POLYAMIDE NYLON
Material Document and ClassificationMIL-P-20693 MIL SPEC SINGLE MATERIAL RESPONSE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
Ammeter
5120-00-031-674432101 INTERCHANGEABLE
Wrench,socket
Renk America Llc Div Renk America
5340-00-085-77332626575 INTERCHANGEABLE
Holder,spring
Honeywell International Inc Div Aerospace-South Bend (bendix Dr)
6210-00-231-2014 INTERCHANGEABLE
Lens,light
5985-00-303-8088218561 INTERCHANGEABLE
Waveguide Assembly
Microtech Inc Dba Microtech Inc
5970-00-405-815532101 INTERCHANGEABLE
Insulator Assembly
Beta Labs Inc a-B and Millen Mfg Div
5342-00-442-681332101 INTERCHANGEABLE
Bracket,oil Mist Tube
Williams International Co., L.l.c.
4810-01-393-057432101 INTERCHANGEABLE
Seat,valve
Bourns Inc
3455-01-440-3521 INTERCHANGEABLE
Cutter,milling,plain
6515-01-603-6575MCP213H INTERCHANGEABLE
Suture,absorbable,surgical
Ethicon Us Llc Div Ethicon
Cross-Reference Index
Part NumberManufacturer
21856-1 Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA)
262657-5 Raytheon Company Dba Raytheon Co (USA)
32101 Eldec Aerospace Corp (USA)
3522 500 20466 Thales Nederland (NLD)
10195N Ross Milton Co the (USA)
Related Parts
6625-01-203-9240SUCCESSOR
AMMETER
5120-00-031-6744INTERCHANGEABLE
WRENCH,SOCKET
32101
5340-00-085-7733INTERCHANGEABLE
HOLDER,SPRING
2626575
6210-00-231-2014INTERCHANGEABLE
LENS,LIGHT
5985-00-303-8088INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
218561
5970-00-405-8155INTERCHANGEABLE
INSULATOR ASSEMBLY
32101
5342-00-442-6813INTERCHANGEABLE
BRACKET,OIL MIST TUBE
32101
4810-01-393-0574INTERCHANGEABLE
SEAT,VALVE
32101
3455-01-440-3521INTERCHANGEABLE
CUTTER,MILLING,PLAIN
6515-01-603-6575INTERCHANGEABLE
SUTURE,ABSORBABLE,SURGICAL
MCP213H
9535-01-649-5838INTERCHANGEABLE
STRIP,METAL
32101
5120-01-660-2557INTERCHANGEABLE
SCREWDRIVER,CROSS TIP
32101

Frequently Asked Questions

What is NSN 5999-00-928-9775?

NSN 5999-00-928-9775 is a Mounting Pad,electrical-Electron, manufactured by Smiths Aerospace, Inc., Electronic Systems-Grand Rapids, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-928-9775?

NSN 5999-00-928-9775 has 5 cross-referenced part numbers: 21856-1 (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids), 262657-5 (Raytheon Company Dba Raytheon Co), 32101 (Eldec Aerospace Corp), 3522 500 20466 (Thales Nederland), 10195N (Ross Milton Co the).

What NSN replaces 5999-00-928-9775?

There are 12 known substitutes for 5999-00-928-9775: 6625-01-203-9240, 5120-00-031-6744, 5340-00-085-7733 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21856-1?

Key specifications for 21856-1: Material: PLASTIC POLYAMIDE NYLON; Material Document and Classification: MIL-P-20693 MIL SPEC SINGLE MATERIAL RESPONSE; Special Features: 0.365 IN. DIA; 0.07 IN. H; 8 MTG SLOTS EQUALLY SPACED ON A 0.2 IN. RADIUS IN; Material: PLASTIC POLYAMIDE NYLON. 6 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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