Overall Diameter: 0.156 INCHES MINIMUM AND 0.161 INCHES MAXIMUM IN
Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Cross-Sectional Shape Style: RECTANGULAR
Surface Treatment: PASSIVATE OVERALL
Peripheral Shape Style: ROUND
Material: STEEL COMP 302 OVERALL
Center Hole Shape Style: ROUND
Identification
NSN: 5310-00-052-6628
NIIN: 000526628
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
General Description
The Washer,flat, cataloged under National Stock Number 5310-00-052-6628, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 12 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5310-00-052-6628
Item Name
Washer,flat
FSC / FSG
5310 / 53 — Nuts and Washers
Status
ACTIVE
Overall Diameter
0.156 INCHES MINIMUM AND 0.161 INCHES MAXIMUM IN
Material Document and Classification
QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Cross-Sectional Shape Style
RECTANGULAR
Surface Treatment
PASSIVATE OVERALL
Peripheral Shape Style
ROUND
Material
STEEL COMP 302 OVERALL
Center Hole Shape Style
ROUND
Hole Diameter
0.101 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN
Thickness
0.004 INCHES MINIMUM AND 0.006 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items12
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5950-00-154-52899100-1538POSSIBLE MATCH
TRANSFORMER,AUDIO FREQUENCY
Possible match (shared part number)Keysight Technologies Inc
5998-00-270-095850156POSSIBLE MATCH
CIRCUIT CARD ASSEMBLY
Possible match (shared part number)Alliant Techsystems Operations Llc Div Defense Electronic Systems
5330-00-297-643116POSSIBLE MATCH
SEAL,PLAIN ENCASED
Possible match (shared part number)Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc
1680-00-405-587250156POSSIBLE MATCH
ROD,SWIVEL
Possible match (shared part number)Transdigm Inc
5305-00-443-58845015-6POSSIBLE MATCH
SCREW,EXTERNALLY RELIEVED BODY
Possible match (shared part number)L3harris Technologies, Inc. Div Space and Airborne Systems
1610-00-448-438550156POSSIBLE MATCH
HEAD
Possible match (shared part number)Hamilton Sundstrand Corporation Dba Collins Aerospace
5935-00-856-7650C7622-7POSSIBLE MATCH
CONNECTOR BODY,RECEPTACLE,ELECTR
Possible match (shared part number)Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company
5342-01-066-6676POSSIBLE MATCH
LATCH
Possible match (shared part number)
4820-01-288-085450156-07POSSIBLE MATCH
REGULATOR,THERMOSTATIC TEMPERATU
Possible match (shared part number)Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4720-01-436-66104M2T-4FFORX-4FFORX-173POSSIBLE MATCH
HOSE ASSEMBLY,NONMETALLIC
Possible match (shared part number)Gates Corporation
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
50156
3/2Design control — primary reference
U.S. Government activity
10116514
6/9Informative reference only
Nimikkeistokeskus Ncb Finland
Related Parts
5950-00-154-5289POSSIBLE MATCH
TRANSFORMER,AUDIO FREQUENCY
9100-1538
5998-00-270-0958POSSIBLE MATCH
CIRCUIT CARD ASSEMBLY
50156
5330-00-297-6431POSSIBLE MATCH
SEAL,PLAIN ENCASED
16
1680-00-405-5872POSSIBLE MATCH
ROD,SWIVEL
50156
5305-00-443-5884POSSIBLE MATCH
SCREW,EXTERNALLY RELIEVED BODY
5015-6
1610-00-448-4385POSSIBLE MATCH
HEAD
50156
5935-00-856-7650POSSIBLE MATCH
CONNECTOR BODY,RECEPTACLE,ELECTR
C7622-7
5342-01-066-6676POSSIBLE MATCH
LATCH
4820-01-288-0854POSSIBLE MATCH
REGULATOR,THERMOSTATIC TEMPERATU
50156-07
4720-01-436-6610POSSIBLE MATCH
HOSE ASSEMBLY,NONMETALLIC
4M2T-4FFORX-4FFORX-173
4820-01-467-7184POSSIBLE MATCH
REGULATOR,THERMOSTATIC TEMPERATU
50156-14
4820-01-467-7212POSSIBLE MATCH
REGULATOR,THERMOSTATIC TEMPERATU
50156-13
Frequently Asked Questions
What is NSN 5310-00-052-6628?
NSN 5310-00-052-6628 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
What NSN replaces 5310-00-052-6628?
12 possible matches (shared part number, not a government interchangeability claim): 5950-00-154-5289, 5998-00-270-0958, 5330-00-297-6431. Verify interchangeability with system specifications before substitution.
What are the specifications of 5310-00-052-6628?
Key specifications for 5310-00-052-6628: Overall Diameter: 0.156 INCHES MINIMUM AND 0.161 INCHES MAXIMUM IN; Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: PASSIVATE OVERALL. 9 specifications are documented in the U.S. Government catalog.
Is NSN 5310-00-052-6628 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.