The Block,tackle, cataloged under National Stock Number 3940-00-950-2955, is classified within Federal Supply Class 3940 (No Item Name Available) of the Materials Handling Equipment group. The primary manufacturer of record is Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 3940-00-950-2955 |
| Primary Part Number | AA59808-31E |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — No Item Name Available |
| Manufacturer | Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| Status | CANCELLED |
| Sheave Bearing Lubrication Method | SELF-LUBRICATED |
| Antitoppling Device | NOT INCLUDED |
| Nondefinitive Spec/std Data | 2 TYPE |
| Surface Treatment | ZINC OVERALL |
| Bearing Type | PLAIN |
| Material | IRON AND STEEL SHELL |
| Tackle Locking Device | NOT INCLUDED |
| Load Rating | 2000.0 POUNDS MAXIMUM LBS |
| Material | COPPER ALLOY BEARING |
| Material | WOOL AND STEEL SHEAVE |
| Style Designator | ROUND PATTERN |
| Material | STEEL CENTER PIN |
| Sheave Quantity | 1 |
| Becket Quantity | 1 |
| Maximum Tackle Diameter Accommodated | 0.750 INCHES IN |
| Sheave Outside Diameter | 3.500 INCHES NOMINAL IN |
| Shell Length | 6.000 INCHES NOMINAL IN |
| Block Type | REGULAR |
| Attachment Style | FLATTED LOOSE SWIVEL EYE WITH SWIVEL HOOK |
| Center Pin Diameter | 0.500 INCHES NOMINAL IN |
| Becket Type | THIMBLE |
| Tackle Accommodated Type | FIBROUS ROPE |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| AA59808-31E | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
| 62619-02X01PC49 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| A-A-59808 | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
| GGG-B-490 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
NSN 3940-00-950-2955 is a Block,tackle, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 3940 (No Item Name Available). Status: cancelled.
NSN 3940-00-950-2955 has 4 cross-referenced part numbers: AA59808-31E (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), 62619-02X01PC49 (Electric Boat Corporation Div General Dynamics Electric Boat), A-A-59808 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), GGG-B-490 (Federal Specifications Promulgated by General Services Administration Washington DC).
There are 8 known substitutes for 3940-00-950-2955: 3940-00-059-5995, 3940-00-059-5996, 3940-00-068-9173 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for AA59808-31E: Sheave Bearing Lubrication Method: SELF-LUBRICATED; Antitoppling Device: NOT INCLUDED; Nondefinitive Spec/std Data: 2 TYPE; Surface Treatment: ZINC OVERALL. 23 total characteristics are documented in the Federal Logistics Information System.
NSN 3940-00-950-2955 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.