PartsTable
Technical Data Sheet
Download PDF

581-6726890-18 — KEY,MACHINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

581-6726890-18: KEY,MACHINE.

The KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316L OVERALL, flat_height: 0.748 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN, minor_width: 0.748 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN, overall_width: 3.170 INCHES MINIMUM AND 3.210 INCHES MAXIMUM IN, overall_height: 1.220 INCHES NOMINAL IN, overall_length: 0.748 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-487-2235, 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
581-6726890-18
NSN: 5315-01-487-2235
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 316L OVERALL
flat_height0.748 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
minor_width0.748 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
overall_width3.170 INCHES MINIMUM AND 3.210 INCHES MAXIMUM IN
overall_height1.220 INCHES NOMINAL IN
overall_length0.748 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
shoulder_width1.220 INCHES NOMINAL IN
style_designatorT SHAPE
end_item_identificationSHEAVE ASSY; SEAWOLF CLASS SSN
material_document_and_classificationQQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5315-01-487-2235
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 581-6726890-18 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SHOULDER WIDTH: 1.220 INCHES NOMINAL IN
•
STYLE DESIGNATOR: T SHAPE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MINOR WIDTH: 0.748 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.220 INCHES NOMINAL IN
SHOULDER WIDTH1.220 INCHES NOMINAL IN
STYLE DESIGNATORT SHAPE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH0.748 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
OVERALL WIDTH3.170 INCHES MINIMUM AND 3.210 INCHES MAXIMUM IN
MINOR WIDTH0.748 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONSHEAVE ASSY; SEAWOLF CLASS SSN
MATERIALSTEEL COMP 316L OVERALL
FLAT HEIGHT0.748 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5315 — Nails, Machine Keys, and Pins
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5315-00-000-1037 5315-00-000-1067 5315-00-000-1245 5315-00-000-1372 5315-00-000-1412 5315-00-001-1571 5315-00-001-1572 5315-00-001-1602
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 581-6726890-18?
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 581-6726890-18?
581-6726890-18 is a KEY,MACHINE.
What is the NSN for 581-6726890-18?
581-6726890-18 is cataloged in the U.S. Government catalog under NSN 5315-01-487-2235. 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 — 581-6726890-18

✓ 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.