NSN 5310-01-376-3574 · NIIN 013763574 · Part number CTS270C-4
The Boeing Company Div Defense · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 76301
Government record, cited
NSN 5310-01-376-3574 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-376-3574. Manufacturer of record part number: CTS270C-4.
Also searched as5310-01-376-3574 ·
5310013763574 ·
NIIN 013763574 ·
01-376-3574 ·
FSC 5310 Nuts and Washers · CAGE 76301 · CTS270C-4
Surface Treatment Document and Classification: MIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Style Designator: CONCAVE
Outside Diameter: 1.365 INCHES MINIMUM AND 1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM1.385 INCHES MAXIMUM IN
Surface Treatment: OXIDE OVERALL
Hole Diameter: 0.670 INCHES MINIMUM AND 0.670 INCHES MINIMUM AND 0.730 INCHES MAXIMUM0.730 INCHES MAXIMUM IN
1 manufacturer part number on file
Manufacturer of record: The Boeing Company Div Defense
Identification
NSN: 5310-01-376-3574
NIIN: 013763574
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: CTS270C-4
Manufacturer: The Boeing Company Div Defense
General Description
The Washer,seal, cataloged under National Stock Number 5310-01-376-3574, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 5 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
5310-01-376-3574
Primary Part Number
CTS270C-4
Item Name
Washer,seal
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
The Boeing Company Div Defense
Status
ACTIVE
Surface Treatment Document and Classification
MIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Style Designator
CONCAVE
Outside Diameter
1.365 INCHES MINIMUM AND 1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM1.385 INCHES MAXIMUM IN
Surface Treatment
OXIDE OVERALL
Hole Diameter
0.670 INCHES MINIMUM AND 0.670 INCHES MINIMUM AND 0.730 INCHES MAXIMUM0.730 INCHES MAXIMUM IN
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040
5310-00-000-0040 · Item name not on file
5310-00-000-0077
NUT,PLAIN,ROUND
5310-00-000-0079
WASHER,FLAT
5310-00-000-0079
WASHER,FLAT
5310-00-000-1146
5310-00-000-1146 · Item name not on file
5310-00-000-3815
5310-00-000-3815 · Item name not on file
5310-00-000-4532
5310-00-000-4532 · Item name not on file
5310-00-000-4540
5310-00-000-4540 · Item name not on file
Frequently Asked Questions
What is NSN 5310-01-376-3574?
NSN 5310-01-376-3574 is a Washer,seal, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-376-3574?
NSN 5310-01-376-3574 has 1 manufacturer part number on file: CTS270C-4 (The Boeing Company Div Defense).
What are the specifications of CTS270C-4?
Key specifications for CTS270C-4: Overall Height: 0.365 INCHES MINIMUM AND 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM0.385 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: CONCAVE; Outside Diameter: 1.365 INCHES MINIMUM AND 1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM1.385 INCHES MAXIMUM IN. 5 specifications are documented in the U.S. Government catalog.
Is NSN 5310-01-376-3574 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.