Product Details | TACKLE BLOCK

3940-00-879-2137 A mechanical device, consisting of a pulley(s) or sheave(s) encased in a shell or frame which may be provided with a means such as a hook, eye, strap, screw, etc., by which it may be attached to an object. It is used to change direction of a running rope and/or to gain a mechanical advantage.

Part Alternates: GGGB490, GGG-B-490, 3074UK16, 3074UK-16, 3940-00-879-2137, 00-879-2137, 3940008792137, 008792137

Materials Handling Equipment | Blocks, Tackle, Rigging, and Slings

Supply Group (FSG) NSN Assign. NIIN
39 01 JAN 1962 00-879-2137

Drawings & Photos | NSN 3940-00-879-2137


Demand History | NSN 3940-00-879-2137

Part Number Request Date QTY Origin
3940-00-879-2137 2025-11-317 2 TW
3940-00-879-2137 2025-07-196 2 DIBBS
3940-00-879-2137 2024-11-316 7 DIBBS
3940-00-879-2137 2022-09-271 2 DIBBS
3940-00-879-2137 2022-07-194 2 DIBBS
3940-00-879-2137 2022-04-116 7 DIBBS
3940-00-879-2137 2022-03-62 13 DIBBS
3940-00-879-2137 2021-03-81 13 DIBBS
3940-00-879-2137 2015-05-133 9 DIBBS
3940-00-879-2137 2015-05-132 9 DIBBS
3940-00-879-2137 2012-05-132 1 TW

Cross Reference | NSN 3940-00-879-2137

Part Number Cage Code Manufacturer
3074UK-16 65LN0 APEX TOOL GROUP, LLC
3074UK-16 96508 APEX TOOL GROUP
GGG-B-490 81348 FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES

Request a Quote

What Our Customers Say

Compare

NSNs for Compare ( up to 4 ): Add 3940-00-879-2137

Technical Data | NSN 3940-00-879-2137

Characteristic Specifications
STYLE DESIGNATOR 2 OVAL PATTERN
SHELL LENGTH 16.000 INCHES NOMINAL
SHEAVE OUTSIDE DIAMETER 9.000 INCHES NOMINAL
CENTER PIN DIAMETER 1.000 INCHES NOMINAL
BLOCK TYPE SNATCH
LOCKING STYLE 1 SAFETY LOCKING
MATERIAL AND LOCATION BRONZE BEARING STEEL CENTER PIN IRON SHEAVE AND STEEL SHEAVE IRON SHELL AND STEEL SHELL
SURFACE TREATMENT AND LOCATION ZINC, ELECTROLYTIC OVERALL
SHEAVE QUANTITY 1
BEARING TYPE PLAIN
SHEAVE BEARING LUBRICATION METHOD SELF-LUBRICATED
TACKLE ACCOMMODATED TYPE FIBROUS ROPE
MAXIMUM TACKLE DIAMETER ACCOMMODATED 2.000 INCHES
TACKLE LOCKING DEVICE NOT INCLUDED
ANTITOPPLING DEVICE NOT INCLUDED
ATTACHMENT STYLE 28 DRILLED SWIVEL EYE AND SHACKLE
MAXIMUM LOAD RATING 16000.0 POUNDS
SPECIAL FEATURES SHEAVE THICKNESS AT RIM MIN 2.625 IN.
NONDEFINITIVE SPEC/STD DATA 3 TYPE
MANUFACTURERS CODE 81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE GGG-B-490

Restrictions/Controls & Freight Information | NSN 3940-00-879-2137

Category Code Description
Shelf-Life Code:0Nondeteriorative
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:AItem does not contain precious metal
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
NMF Description 127300 PULLEY BLOCKS/TCKLE/SNATCH/FAIRLDRS
Less than car load rating
Less than truck load rating S 60.0
Water commodity Code 576 unknown
Originating Activity Code XX
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity B Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable

Management | NSN 3940-00-879-2137

Category Code Description
Budget Code9 General Support DIV57X4921.070:Air Force decentrally managed expense items (ERRC XB3, XF-3) with a unit cost of less than $250,000 that are requisitioned/procured at base (retail) level from DLA, GSA, Army, Navy, Depot Maintenance Service, Air Force Industrial Fund (AFMC), local manufacture and commercial vendors.
Price ValidationN The current standard price in Catalog Management Data (CMD) has not analyzed or coded for LP/LM.
  • The price has not been analyzed or reviewed for accuracy.
  • ZOP or Standard price challenges are permissible, but must be supported with adequate justification. However, if coded for Local Purchase (LP) or Fabrication/Manufacture as indicated with an (LM) Acquisition Advice Code of ?L? or?F?,the case must be evaluated locally where purchased or fabricated.
Fund CodeSFStock fund applicable to items managed for the Air Force by the respective Inventory Control Point.
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDFDepartment of the Air Force
Service OrganizationFU.S. Air Force
ReparabilityNStock Fund (except Munitions)
Acquisition Advice CodesZINSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each
Category Code Description
Cognizance Codes9BNavy-owned stocks of DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesZINSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each