PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1000-49Nut,plain,round

Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc · NSN 5310-00-771-9550 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-771-9550 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-771-9550. Primary manufacturer part number: 1000-49.
Features
  • Nut,plain,round — FSC 5310
  • Nut Diameter: 1.245 INCHES NOMINAL IN
  • Thread Series: UNEF
  • Thread Quantity Per Inch: 20
  • Nominal Thread Size: 0.875 INCHES IN
  • Material: ALUMINUM OVERALL
  • Drive Point Width: 0.125 INCHES NOMINAL IN
  • Nut Thickness: 0.250 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Aluminum Overall construction
General Description

The Nut,plain,round, cataloged under National Stock Number 5310-00-771-9550, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc. Government technical data includes 12 verified specifications, 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
NSN5310-00-771-9550
Primary Part Number1000-49
Item NameNut,plain,round
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNammo Defense Systems Inc. Dba Nammo Defense Systems Inc
StatusACTIVE
Nut Diameter1.245 INCHES NOMINAL IN
Thread SeriesUNEF
Thread Quantity Per Inch20
Nominal Thread Size0.875 INCHES IN
MaterialALUMINUM OVERALL
Drive Point Width0.125 INCHES NOMINAL IN
Nut Thickness0.250 INCHES NOMINAL IN
Thread Class2B
Thread DirectionRIGHT-HAND
Drive Point Quantity2
Nut StyleROUND
Drive Point Depth0.125 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5950-00-401-6393 INTERCHANGEABLE
Transformer,power
4730-00-540-1733100049 INTERCHANGEABLE
Adapter,straight,pipe to Gas Fit
Metadure Parts & Sales, Inc.
3120-00-540-7565B35-3 INTERCHANGEABLE
Bearing,sleeve
Altra Industrial Motion Corp.
1560-00-606-3115 INTERCHANGEABLE
Tube Assembly,fuel Tank
4510-00-707-5972199401085 INTERCHANGEABLE
Repair Kit Water Pu
L & L Boiler Maintenance Inc
6625-00-777-7413100049 INTERCHANGEABLE
Cable Assembly,elec
Mission Systems Davenport Inc.
6685-01-048-0753639AS658 INTERCHANGEABLE
Gage,pressure,dial Indicating
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
3120-01-100-9838100049 INTERCHANGEABLE
Bearing Assy,jewel
Trans-Cal Industries, Inc
5306-01-413-739410004-9 INTERCHANGEABLE
Bolt,machine
Blissfield Manufacturing Company
4730-01-651-9298100-049 INTERCHANGEABLE
Adapter,straight,pipe to Gas Fit
Hydro-Test Products, Inc. Dba Hydro-Test Products Inc
Cross-Reference Index
Part NumberManufacturer
1000-49 PRIMARY Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc (USA)
Related Parts
5950-00-401-6393INTERCHANGEABLE
TRANSFORMER,POWER
4730-00-540-1733INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO GAS FIT
100049
3120-00-540-7565INTERCHANGEABLE
BEARING,SLEEVE
B35-3
1560-00-606-3115INTERCHANGEABLE
TUBE ASSEMBLY,FUEL TANK
4510-00-707-5972INTERCHANGEABLE
REPAIR KIT WATER PU
199401085
6625-00-777-7413INTERCHANGEABLE
CABLE ASSEMBLY,ELEC
100049
6685-01-048-0753INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
639AS658
3120-01-100-9838INTERCHANGEABLE
BEARING ASSY,JEWEL
100049
5306-01-413-7394INTERCHANGEABLE
BOLT,MACHINE
10004-9
4730-01-651-9298INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO GAS FIT
100-049
6530-01-662-0383INTERCHANGEABLE
LITTER SET

Frequently Asked Questions

What is NSN 5310-00-771-9550?

NSN 5310-00-771-9550 is a Nut,plain,round, manufactured by Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-771-9550?

NSN 5310-00-771-9550 has 1 cross-referenced part number: 1000-49 (Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc).

What NSN replaces 5310-00-771-9550?

There are 11 known substitutes for 5310-00-771-9550: 5950-00-401-6393, 4730-00-540-1733, 3120-00-540-7565 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1000-49?

Key specifications for 1000-49: Nut Diameter: 1.245 INCHES NOMINAL IN; Thread Series: UNEF; Thread Quantity Per Inch: 20; Nominal Thread Size: 0.875 INCHES IN. 12 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com