The Block,tackle, cataloged under National Stock Number 3940-00-238-0408, is classified within Federal Supply Class 3940 (No Item Name Available) of the Materials Handling Equipment group. The primary manufacturer of record is Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 19 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: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 3940-00-238-0408 |
| Primary Part Number | GGGB500 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — No Item Name Available |
| Manufacturer | Federal Specifications Promulgated by General Services Administration Washington DC |
| Status | CANCELLED |
| Bearing Type | PLAIN |
| Surface Treatment | ZINC OVERALL |
| Tackle Accommodated Type | WIRE ROPE |
| Sheave Quantity | 1 |
| Attachment Style | DRILLED SWIVEL EYE AND SHACKLE |
| Block Type | SNATCH |
| Tackle Locking Device | NOT INCLUDED |
| Sheave Bearing Lubrication Method | SELF-LUBRICATED |
| Locking Style | SAFETY LOCKING |
| Antitoppling Device | NOT INCLUDED |
| Maximum Tackle Diameter Accommodated | 0.625 INCHES IN |
| Sheave Outside Diameter | 8.000 INCHES NOMINAL IN |
| Load Rating | 6000.0 POUNDS MAXIMUM LBS |
| Material | STEEL SHEAVE |
| Material | STEEL CENTER PIN |
| Style Designator | OVAL PATTERN |
| Material | COPPER ALLOY BEARING |
| Material | STEEL SHELL |
| Nondefinitive Spec/std Data | 1 TYPE |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| GGGB500 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
NSN 3940-00-238-0408 is a Block,tackle, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 3940 (No Item Name Available). Status: cancelled.
NSN 3940-00-238-0408 has 1 cross-referenced part number: GGGB500 (Federal Specifications Promulgated by General Services Administration Washington DC).
There are 11 known substitutes for 3940-00-238-0408: 3940-00-234-8239, 3940-00-238-0348, 3940-00-238-0409 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for GGGB500: Bearing Type: PLAIN; Surface Treatment: ZINC OVERALL; Tackle Accommodated Type: WIRE ROPE; Sheave Quantity: 1. 19 total characteristics are documented in the Federal Logistics Information System.
NSN 3940-00-238-0408 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.