NSN 4240-01-652-0577 · NIIN 016520577 · Part number 4550ISH-XL
Misty Mountain Threadworks, Inc. Dba Misty Mountain Threadworks Inc · FSC 4240 — Safety and Rescue Equipment · FSG 42 — Fire Fighting, Rescue, and Safety Equipment · CAGE 3EML2
Government record, cited
NSN 4240-01-652-0577 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-652-0577. Manufacturer of record part number: 4550ISH-XL.
Also searched as4240-01-652-0577 ·
4240016520577 ·
NIIN 016520577 ·
01-652-0577 ·
FSC 4240 Safety and Rescue Equipment · CAGE 3EML2 · 4550ISH-XL
FSG: 42 — Fire Fighting, Rescue, and Safety Equipment
Primary part number: 4550ISH-XL
Manufacturer: Misty Mountain Threadworks, Inc. Dba Misty Mountain Threadworks Inc
General Description
The Straps,climbers', cataloged under National Stock Number 4240-01-652-0577, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Misty Mountain Threadworks, Inc. Dba Misty Mountain Threadworks Inc. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4240-01-652-0577
Primary Part Number
4550ISH-XL
Item Name
Straps,climbers'
FSC / FSG
4240 / 42 — Safety and Rescue Equipment
Manufacturer
Misty Mountain Threadworks, Inc. Dba Misty Mountain Threadworks Inc
Status
ACTIVE
Garment Size
X-LARGE
Garment Closing Method
BUCKLE, QUICK RELEASE BUCKLE
Buckle Type
QUICK RELEASE
Attachment Method
QUICK RELEASE ASSEMBLY BUCKLE
Fiber Material
NYLON OVERALL
Cloth-Fabric Name
ELASTIC AND WEBBING OVERALL
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Misty Mountain Threadworks, Inc. Dba Misty Mountain Threadworks Inc (USA)
No interchangeability data on file.
Other items in FSC 4240 — Safety and Rescue Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4240-00-001-1515
4240-00-001-1515 · Item name not on file
4240-00-001-2684
4240-00-001-2684 · Item name not on file
4240-00-006-0022
HOSE,EVACUATION
4240-00-007-4576
4240-00-007-4576 · Item name not on file
4240-00-007-8182
4240-00-007-8182 · Item name not on file
4240-00-007-8183
4240-00-007-8183 · Item name not on file
4240-00-007-8184
4240-00-007-8184 · Item name not on file
4240-00-007-8185
4240-00-007-8185 · Item name not on file
Frequently Asked Questions
What is NSN 4240-01-652-0577?
NSN 4240-01-652-0577 is a Straps,climbers', manufactured by Misty Mountain Threadworks, Inc. Dba Misty Mountain Threadworks Inc, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
What part numbers are listed for NSN 4240-01-652-0577?
NSN 4240-01-652-0577 has 1 manufacturer part number on file: 4550ISH-XL (Misty Mountain Threadworks, Inc. Dba Misty Mountain Threadworks Inc).
What are the specifications of 4550ISH-XL?
Key specifications for 4550ISH-XL: Garment Size: X-LARGE; Garment Closing Method: BUCKLE, QUICK RELEASE BUCKLE; Buckle Type: QUICK RELEASE; Special Features: COLOR-COYOTE. 6 specifications are documented in the U.S. Government catalog.
Is NSN 4240-01-652-0577 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.