PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

15516Key,socket Head Screw

Eklind Tool Co · NSN 5120-01-644-3442 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-644-3442 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-644-3442. Primary manufacturer part number: 15516.
Features
  • Key,socket Head Screw — FSC 5120
  • Features Provided: SHORT SERIES
  • Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL
  • Material: STEEL OVERALL
  • Wrenching Surface Size: 8.0 MILLIMETERS NOMINAL BOTH ENDS MM
  • Long Arm Length: 3.840 INCHES NOMINAL IN
  • Short Arm Length: 1.380 INCHES NOMINAL IN
  • Surface Treatment: OXIDE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Key,socket Head Screw, cataloged under National Stock Number 5120-01-644-3442, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Eklind Tool Co. Government technical data includes 8 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
NSN5120-01-644-3442
Primary Part Number15516
Item NameKey,socket Head Screw
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerEklind Tool Co
StatusACTIVE
Features ProvidedSHORT SERIES
Wrenching Surface ShapeHEXAGON BOTH ENDS EXTERNAL
MaterialSTEEL OVERALL
Wrenching Surface Size8.0 MILLIMETERS NOMINAL BOTH ENDS MM
Long Arm Length3.840 INCHES NOMINAL IN
Short Arm Length1.380 INCHES NOMINAL IN
Surface TreatmentOXIDE OVERALL
Style DesignatorL-HANDLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5310-00-189-8895SCD1347-12 INTERCHANGEABLE
Washer,flat
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5340-00-496-1228 INTERCHANGEABLE
Locking Plate,nut and Bolt
2915-00-817-451015516 INTERCHANGEABLE
Inlet,compressor
Williams International Co., L.l.c.
8145-01-139-562115516 INTERCHANGEABLE
Shipping and Storage Container
Naval Inventory Control Point
5315-01-199-611515516 INTERCHANGEABLE
Key
Dana Commercial Vehicle Products, Llc
6530-01-396-9065107276 INTERCHANGEABLE
Bottle,safety Cap
Amerisource Corp Louisville Div
6530-01-397-3520 INTERCHANGEABLE
Bottle,safety Cap
2510-01-462-90951551-6 INTERCHANGEABLE
Cap,truck,mounting
Mcclarin Plastics, Llc Dba Mcclarin Plastics Llc Div Mcclarin Composites - Wapato
2510-01-502-66681552-6-C INTERCHANGEABLE
Cap,truck,mounting
Mcclarin Plastics, Llc Dba Mcclarin Plastics Llc Div Mcclarin Composites - Wapato
2510-01-502-77111551-6-C INTERCHANGEABLE
Cap,truck,mounting
Mcclarin Plastics, Llc Dba Mcclarin Plastics Llc Div Mcclarin Composites - Wapato
Cross-Reference Index
Part NumberManufacturer
15516 PRIMARY Eklind Tool Co (USA)
Related Parts
5310-00-189-8895INTERCHANGEABLE
WASHER,FLAT
SCD1347-12
5340-00-496-1228INTERCHANGEABLE
LOCKING PLATE,NUT AND BOLT
2915-00-817-4510INTERCHANGEABLE
INLET,COMPRESSOR
15516
8145-01-139-5621INTERCHANGEABLE
SHIPPING AND STORAGE CONTAINER
15516
5315-01-199-6115INTERCHANGEABLE
KEY
15516
6530-01-396-9065INTERCHANGEABLE
BOTTLE,SAFETY CAP
107276
6530-01-397-3520INTERCHANGEABLE
BOTTLE,SAFETY CAP
2510-01-462-9095INTERCHANGEABLE
CAP,TRUCK,MOUNTING
1551-6
2510-01-502-6668INTERCHANGEABLE
CAP,TRUCK,MOUNTING
1552-6-C
2510-01-502-7711INTERCHANGEABLE
CAP,TRUCK,MOUNTING
1551-6-C
5110-01-658-0248INTERCHANGEABLE
PUNCH,CUTTING,REVOLVING HEAD
155 1-6

Frequently Asked Questions

What is NSN 5120-01-644-3442?

NSN 5120-01-644-3442 is a Key,socket Head Screw, manufactured by Eklind Tool Co, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-644-3442?

NSN 5120-01-644-3442 has 1 cross-referenced part number: 15516 (Eklind Tool Co).

What NSN replaces 5120-01-644-3442?

There are 11 known substitutes for 5120-01-644-3442: 5310-00-189-8895, 5340-00-496-1228, 2915-00-817-4510 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 15516?

Key specifications for 15516: Features Provided: SHORT SERIES; Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL; Material: STEEL OVERALL; Wrenching Surface Size: 8.0 MILLIMETERS NOMINAL BOTH ENDS MM. 8 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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