NSN 1660-00-172-9206 · NIIN 001729206 · Part number 51D50
Grimes Aerospace Company · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 72914
Government record, cited
NSN 1660-00-172-9206 — this item is cataloged by the U.S. Government under National Stock Number 1660-00-172-9206. Manufacturer of record part number: 51D50.
Also searched as1660-00-172-9206 ·
1660001729206 ·
NIIN 001729206 ·
00-172-9206 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 72914 · 51D50
General Characteristics Item Description: STEEL; CRES; QQ-S-763 OR AMS5640; 0.810 IN. HWX FLANGE; 0.531 IN.LG; 0.351 IN. DIA HOLE FLANGE END; 0.470 IN. DEPTH OF HOLE; 9/16-24UNEF-2A THREADED END A
1 manufacturer part number on file
Manufacturer of record: Grimes Aerospace Company
Identification
NSN: 1660-00-172-9206
NIIN: 001729206
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 51D50
Manufacturer: Grimes Aerospace Company
General Description
The Cap,bearing, cataloged under National Stock Number 1660-00-172-9206, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Grimes Aerospace Company. Government technical data includes 1 specification, 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
1660-00-172-9206
Primary Part Number
51D50
Item Name
Cap,bearing
FSC / FSG
1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Manufacturer
Grimes Aerospace Company
Status
ACTIVE
General Characteristics Item Description
STEEL; CRES; QQ-S-763 OR AMS5640; 0.810 IN. HWX FLANGE; 0.531 IN.LG; 0.351 IN. DIA HOLE FLANGE END; 0.470 IN. DEPTH OF HOLE; 9/16-24UNEF-2A THREADED END A
Other items in FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1660-00-006-4472
FLANGE,VALVE BODY
1660-00-009-5646
ADAPTER ASSEMBLY,BELLOWS
1660-00-019-8389
1660-00-019-8389 · Item name not on file
1660-00-019-8399
1660-00-019-8399 · Item name not on file
1660-00-031-5285
1660-00-031-5285 · Item name not on file
1660-00-302-4390
PISTON,REGULATING V
1660-00-441-0575
PISTON
1660-01-601-0729
ETHERNET SWITCH
Frequently Asked Questions
What is NSN 1660-00-172-9206?
NSN 1660-00-172-9206 is a Cap,bearing, manufactured by Grimes Aerospace Company, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What part numbers are listed for NSN 1660-00-172-9206?
NSN 1660-00-172-9206 has 1 manufacturer part number on file: 51D50 (Grimes Aerospace Company).
What are the specifications of 51D50?
Key specifications for 51D50: General Characteristics Item Description: STEEL; CRES; QQ-S-763 OR AMS5640; 0.810 IN. HWX FLANGE; 0.531 IN.LG; 0.351 IN. DIA HOLE FLANGE END; 0.470 IN. DEPTH OF HOLE; 9/16-24UNEF-2A THREADED END A. 1 specification is documented in the U.S. Government catalog.
Is NSN 1660-00-172-9206 hazardous material?
No hazard code in the DLA record (HMIC N). 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.