NSN 3940-00-999-7579, 3940009997579
SLING,BEAM TYPE

Federal Supply Classification: FSC 3940 - Blocks, Tackle, Rigging, and Slings
National Item Identification Number: NIIN 009997579
Codification Country: United States
Item Name Code: INC 21769
Criticality: (X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 3940-00-999-7579

National Stock Number (NSN) 3940-00-999-7579, or NIIN 009997579, (sling,beam type) was assigned March 18, 1966 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years.

This NSN is assigned to Item Name Code (INC) 21769. [AN ITEM CONSISTING OF TWO OR MORE LEGS OR LOOPS, SUSPENDED FROM A BEAM, HOISTING. THE LEGS ARE FABRICATED OF CHAIN, ROPE, WEBBING, ROD, OR THE LIKE, AND MAY INCLUDE ATTACHMENTS OR BUILT-IN LOOPS AT THE LOWER ENDS. THE ITEM MAY ALSO INCLUDE ONE OR MORE SPREADER, SLING. DO NOT USE IF A MORE SPECIFIC NAME APPLIES.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 3940009997579 does not contain precious metals.

This information was last updated on Jul 01, 2025.

Technical Characteristics

SLING SPREADER: (BQHH) INCLUDED
ATTACHMENT STYLE DIMENSIONS: (AJRS) 1.000 INCHES NOMINAL BEARING SURFACE TO BEARING SURFACE DISTANCE
ATTACHMENT TYPE/LOCATION AND QUANTITY: (BQGT) 1 ANCHOR SHACKLE, STYLE 15 INTERMEDIATE ATTACHMENT
ATTACHMENT TYPE/LOCATION AND QUANTITY: (BQGT) 4 ANCHOR SHACKLE, STYLE 15 BOTTOM TERMINAL
UNABLE TO DECODE: (ABXG) UNABLE TO DECODE
ADJUSTABILITY: (APCS) NONADJUSTABLE
ATTACHMENT TYPE: (BDHD) ANCHOR SHACKLE, STYLE 15 INTERMEDIATE ATTACHMENT
ATTACHMENT TYPE: (BDHD) ANCHOR SHACKLE, STYLE 15 TOP TERMINAL
ATTACHMENT TYPE: (BDHD) ANCHOR SHACKLE, STYLE 15 BOTTOM TERMINAL
ATTACHMENT STYLE DIMENSIONS: (AJRS) 0.050 INCHES MINIMUM PIN DIAMETER AND 0.250 INCHES MAXIMUM PIN DIAMETER AND 1.000 INCHES MINIMUM BEARING SURFACE TO BEARING SURFACE DISTANCE AND 1.125 INCHES MAXIMUM BEARING SURFACE TO BEARING SURFACE DISTANCE AND 0.500 INCHES NOMINAL INSIDE WIDTH BETWEEN EYES AND 0.500 INCHES NOMINAL INSIDE WIDTH BETWEEN EYES AND 0.500 INCHES NOMINAL INSIDE WIDTH BETWEEN EYES AND 0.250 INCHES NOMINAL PIN DIAMETER AND 1.125 INCHES NOMINAL BEARING SURFACE TO BEARING SURFACE DISTANCE
BEAM OVERALL HEIGHT: (BQPH) 4.000 INCHES NOMINAL
BEAM OVERALL LENGTH: (BQHL) 36.000 INCHES NOMINAL
BEAM OVERALL WIDTH: (BQHM) 0.500 INCHES NOMINAL
BEAM TO HOISTING APPARATUS ATTACHMENT TYPE AND QUANTITY: (BQHQ) 2 SHACKLE, RIGIDLY ATTACHED TO BEAM
BEAM TO LOAD ATTACHMENT TYPE AND QUANTITY: (BQHR) 4 SHACKLE
CROSS SECTION OUTSIDE DIAMETER: (ADVL) 0.250 INCHES NOMINAL
DESIGN TYPE: (APGF) MULTIPLE LEG
FURNISHED ITEMS: (ABFF) SLING SPREADER
LEG LENGTH AND QUANTITY: (BQGW) 4 LEGS,2 LEGS 46-1/2 IN. BETWEEN TERMINAL BEARING SURFACES,2 LEGS 28 IN. BETWEEN TERMINAL BEARING SURFACES
OVERALL LENGTH: (ABHP) 30.500 INCHES NOMINAL
OVERALL THICKNESS: (ADUM) 0.500 INCHES NOMINAL
OVERALL WIDTH: (ABMK) 4.000 INCHES NOMINAL
MATERIAL: (MATT) STEEL
QUANTITY: (NMBR) 1 BOTTOM TERMINAL
QUANTITY: (NMBR) 3 TOP TERMINAL
QUANTITY: (NMBR) 4 INTERMEDIATE ATTACHMENT
SLING MATERIAL TYPE: (CLSH) WIRE ROPE
STOCK SIZE AND LOCATION: (CPXB) 3/8 IN. MATERIAL SIZE TOP TERMINAL,5/16 IN. MATERIAL SIZE INTERMEDIATE TERMINAL,5/16 IN. MATERIAL SIZE BOTTOM TERMINAL
ATTACHMENT STYLE DIMENSIONS: (AJRS) 0.250 INCHES NOMINAL PIN DIAMETER
ATTACHMENT STYLE DIMENSIONS: (AJRS) 0.500 INCHES NOMINAL INSIDE WIDTH BETWEEN EYES
UNABLE TO DECODE: (MATL) UNABLE TO DECODE
ATTACHMENT STYLE DIMENSIONS: (AJRS) 1.125 INCHES NOMINAL BEARING SURFACE TO BEARING SURFACE DISTANCE
ATTACHMENT STYLE DIMENSIONS: (AJRS) 0.050 INCHES NOMINAL PIN DIAMETER
BEAM TO HOISTING APPARATUS ATTACHMENT TYPE AND QUANTITY: (BQHQ) FACILITIES FOR ATTACHING TO HOISTING APPARATUS 2 SHACKLES,RIGIDLY ATTACHED TO BEAM
BEAM TO LOAD ATTACHMENT TYPE AND QUANTITY: (BQHR) FACILITIES TO PERMIT ATTACHING ITEM TO BE LIFTED 4 SHACKLES
MATERIAL: (MATL) STEEL
QUANTITY: (NMBR) 1
OVERALL LENGTH: (ABXG) 30.500 INCHES NOMINAL
ATTACHMENT TYPE/LOCATION AND QUANTITY: (BQGT) 3 ANCHOR SHACKLE, STYLE 15 TOP TERMINAL AND 1 ANCHOR SHACKLE, STYLE 15 INTERMEDIATE ATTACHMENT AND 4 ANCHOR SHACKLE, STYLE 15 BOTTOM TERMINAL