PartsTable
Technical Data Sheet
Download PDF

6539806-1 — STOP,MECHANICAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6539806-1: STOP,MECHANICAL.

The STOP,MECHANICAL is a the manufacturer industrial component. Key specifications include material: STEEL, design_type: STRAIGHT, thread_class: 2B, overall_width: 1.370 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN, overall_height: 1.469 INCHES NOMINAL IN, overall_length: 3.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-369-5040, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
6539806-1
NSN: 5340-01-369-5040
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL
design_typeSTRAIGHT
thread_class2B
overall_width1.370 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN
overall_height1.469 INCHES NOMINAL IN
overall_length3.500 INCHES NOMINAL IN
nominal_thread_size1.000 INCHES IN
thread_quantity_per_inch12
thread_series_designatorUNF
material_document_and_classificationASTM A514, GRADE F ASSN STD SINGLE MATERIAL RESPONSE
NSN5340-01-369-5040
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6539806-1 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
DESIGN TYPE: STRAIGHT
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A514, GRADE F ASSN STD SINGLE MATERIAL RESPONSE
•
NOMINAL THREAD SIZE: 1.000 INCHES IN
•
THREAD CLASS: 2B
•
THREAD QUANTITY PER INCH: 12
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.469 INCHES NOMINAL IN
DESIGN TYPESTRAIGHT
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A514, GRADE F ASSN STD SINGLE MATERIAL RESPONSE
OVERALL LENGTH3.500 INCHES NOMINAL IN
OVERALL WIDTH1.370 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN
NOMINAL THREAD SIZE1.000 INCHES IN
THREAD CLASS2B
THREAD QUANTITY PER INCH12
MATERIALSTEEL
THREAD SERIES DESIGNATORUNF
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 6539806-1?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 6539806-1?
6539806-1 is a STOP,MECHANICAL.
What is the NSN for 6539806-1?
6539806-1 is cataloged in the U.S. Government catalog under NSN 5340-01-369-5040. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 6539806-1

✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.