NSN 6635-01-588-6014 — this item is cataloged by the U.S. Government under National Stock Number 6635-01-588-6014. Manufacturer of record part number: 8541-03.
Also searched as6635-01-588-6014 ·
6635015886014 ·
NIIN 015886014 ·
01-588-6014 ·
FSC 6635 Physical Properties Testing and Inspection · CAGE 22501 · 8541-03 · 8541-G501ITEM3 · HI-77400P
The Ph Buffer,4.01, cataloged under National Stock Number 6635-01-588-6014, is classified within Federal Supply Class 6635 (Physical Properties Testing and Inspection) of the Instruments and Laboratory Equipment group. The manufacturer of record is Howell Laboratories Inc Dba Howell Laboratories Inc. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
6635-01-588-6014
Primary Part Number
8541-03
Item Name
Ph Buffer,4.01
FSC / FSG
6635 / 66 — Physical Properties Testing and Inspection
Hanna Instruments, Inc. Div Hanna Instruments Usa (USA)
No interchangeability data on file.
Other items in FSC 6635 — Physical Properties Testing and Inspection
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6635-00-000-0133
X-RAY APPARATUS,RADIOGRAPHIC,IND
6635-00-001-1523
FILM,RADIOGRAPHIC
6635-00-001-2317
6635-00-001-2317 · Item name not on file
6635-00-001-2318
6635-00-001-2318 · Item name not on file
6635-00-003-0281
TESTER,TORQUE WRENCH
6635-00-003-0282
CALIBRATOR,TORQUE
6635-00-003-0284
CALIBRATOR,TORQUE
6635-00-003-1193
6635-00-003-1193 · Item name not on file
Frequently Asked Questions
What is NSN 6635-01-588-6014?
NSN 6635-01-588-6014 is a Ph Buffer,4.01, manufactured by Howell Laboratories Inc Dba Howell Laboratories Inc, classified under FSC 6635, Physical Properties Testing and Inspection. Status: active.
What part numbers are listed for NSN 6635-01-588-6014?
NSN 6635-01-588-6014 has 3 manufacturer part numbers on file: 8541-03 (Howell Laboratories Inc Dba Howell Laboratories Inc), 8541-G501ITEM3 (Howell Laboratories Inc Dba Howell Laboratories Inc), HI-77400P (Hanna Instruments, Inc. Div Hanna Instruments Usa).
What are the specifications of 8541-03?
Key specifications for 8541-03: Part Name Assigned by Controlling Agency: (INAVY)BUFFER, PH 4.01. 0 specifications are documented in the U.S. Government catalog.
Is NSN 6635-01-588-6014 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.