PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

16821Bracket,clamp

Naval Electronic Systems Security Engineering Center · NSN 5342-01-013-6043 · FSC 5342 · Mount,resilient,weapon System
Verified by PartsTable
NSN 5342-01-013-6043 — this item is cataloged by the U.S. Government under National Stock Number 5342-01-013-6043. Primary manufacturer part number: 16821.
Features
  • Bracket,clamp — FSC 5342
  • General Characteristics Item Description: ALUMINUM 6061 TEMP T6,QQ-4-250/11,FINISH CHEMICAL FILM TYPE II,GRADE C,CLASS 3 PER MIL-C-5541,4.500 IN. LG,0.939 IN. W,1.312 IN. H,TWO 0.500 IN. DIA BY 0.060 IN. DEEP COUNTERBORES LOCATED ON TOP SURFACE 2.500 IN. C TO C,CENTER OF FIRST HOLE IS 0.500 IN. FROM ONE END AND 0.190 IN. FROM BACK SURFACE,TWO 0.3125-18 UNC-2B THD HOLES LOCATED ON 2.500 IN. C TO C ON FRONT SURFACE,FIRST HOLE IS 1.000 IN. FROM ONE END AND 0.530 IN. FROM BACK SURFACE,FRONT SURFACE HAS 30 DEG BEVEL FULL LENGTH AND 0.875 IN. H IN
  • 1 verified cross-reference
  • Primary manufacturer: Naval Electronic Systems Security Engineering Center
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Bracket,clamp, cataloged under National Stock Number 5342-01-013-6043, is classified within Federal Supply Class 5342 (Mount,resilient,weapon System) of the Hardware and Abrasives group. The primary manufacturer of record is Naval Electronic Systems Security Engineering Center. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5342-01-013-6043
Primary Part Number16821
Item NameBracket,clamp
FSC / FSG5342 / 53 — Mount,resilient,weapon System
ManufacturerNaval Electronic Systems Security Engineering Center
StatusACTIVE
General Characteristics Item DescriptionALUMINUM 6061 TEMP T6,QQ-4-250/11,FINISH CHEMICAL FILM TYPE II,GRADE C,CLASS 3 PER MIL-C-5541,4.500 IN. LG,0.939 IN. W,1.312 IN. H,TWO 0.500 IN. DIA BY 0.060 IN. DEEP COUNTERBORES LOCATED ON TOP SURFACE 2.500 IN. C TO C,CENTER OF FIRST HOLE IS 0.500 IN. FROM ONE END AND 0.190 IN. FROM BACK SURFACE,TWO 0.3125-18 UNC-2B THD HOLES LOCATED ON 2.500 IN. C TO C ON FRONT SURFACE,FIRST HOLE IS 1.000 IN. FROM ONE END AND 0.530 IN. FROM BACK SURFACE,FRONT SURFACE HAS 30 DEG BEVEL FULL LENGTH AND 0.875 IN. H IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
4730-00-116-0477M-3932 INTERCHANGEABLE
Strainer,suction
Marvel Engineering Company Inc
5330-00-121-3075 INTERCHANGEABLE
Seal,oil
3020-00-431-183816821 INTERCHANGEABLE
Sprocket Wheel
Wausau Equipment Company Llc Dba Schmidt Engineering & Equipment Inc Div Wausau Equipment Llc
4730-00-779-098016821 INTERCHANGEABLE
Packing Nut
Fmc Corp
5330-01-092-1443 INTERCHANGEABLE
Packing Assembly
6610-01-125-873716821 INTERCHANGEABLE
Solenoid Assembly,rotary
Astronautics Corporation of America
6685-01-147-852416-819 INTERCHANGEABLE
Gage,pressure,dial Indicating
Hess Manufacturing Inc Div Blast-It-All
5955-01-266-5768755090A0247-1 INTERCHANGEABLE
Crystal Unit,quartz
Marine Corps
5920-01-473-043716821 INTERCHANGEABLE
Fuse,cartridge
Itw Food Equipment Group Llc Dba Gaylord Industries
5920-01-605-31021682-1 INTERCHANGEABLE
Arrester,electrical Surge
Attwood Corp
Cross-Reference Index
Part NumberManufacturer
16821 Naval Electronic Systems Security Engineering Center (USA)
Related Parts
4730-00-116-0477INTERCHANGEABLE
STRAINER,SUCTION
M-3932
5330-00-121-3075INTERCHANGEABLE
SEAL,OIL
3020-00-431-1838INTERCHANGEABLE
SPROCKET WHEEL
16821
4730-00-779-0980INTERCHANGEABLE
PACKING NUT
16821
5330-01-092-1443INTERCHANGEABLE
PACKING ASSEMBLY
6610-01-125-8737INTERCHANGEABLE
SOLENOID ASSEMBLY,ROTARY
16821
6685-01-147-8524INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
16-819
5955-01-266-5768INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
755090A0247-1
5920-01-473-0437INTERCHANGEABLE
FUSE,CARTRIDGE
16821
5920-01-605-3102INTERCHANGEABLE
ARRESTER,ELECTRICAL SURGE
1682-1
5305-01-720-5671INTERCHANGEABLE
SCREW,MACHINE
16821

Frequently Asked Questions

What is NSN 5342-01-013-6043?

NSN 5342-01-013-6043 is a Bracket,clamp, manufactured by Naval Electronic Systems Security Engineering Center, classified under FSC 5342 (Mount,resilient,weapon System). Status: active.

What are the part numbers for NSN 5342-01-013-6043?

NSN 5342-01-013-6043 has 1 cross-referenced part number: 16821 (Naval Electronic Systems Security Engineering Center).

What NSN replaces 5342-01-013-6043?

There are 11 known substitutes for 5342-01-013-6043: 4730-00-116-0477, 5330-00-121-3075, 3020-00-431-1838 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 16821?

Key specifications for 16821: General Characteristics Item Description: ALUMINUM 6061 TEMP T6,QQ-4-250/11,FINISH CHEMICAL FILM TYPE II,GRADE C,CLASS 3 PER MIL-C-5541,4.500 IN. LG,0.939 IN. W,1.312 IN. H,TWO 0.500 IN. DIA BY 0.060 IN. DEEP COUNTERBORES LOCATED ON TOP SURFACE 2.500 IN. C TO C,CENTER OF FIRST HOLE IS 0.500 IN. FROM ONE END AND 0.190 IN. FROM BACK SURFACE,TWO 0.3125-18 UNC-2B THD HOLES LOCATED ON 2.500 IN. C TO C ON FRONT SURFACE,FIRST HOLE IS 1.000 IN. FROM ONE END AND 0.530 IN. FROM BACK SURFACE,FRONT SURFACE HAS 30 DEG BEVEL FULL LENGTH AND 0.875 IN. H IN. 1 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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