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170A742-027 — KEY,MACHINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

170A742-027: KEY,MACHINE.

The KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_width: 0.500 INCHES NOMINAL IN, overall_height: 0.500 INCHES NOMINAL IN, overall_length: 1.668 INCHES MINIMUM AND 1.708 INCHES MAXIMUM IN, style_designator: OCTAGON SHAPE, key_chamfer_angle: 45.0 DEGREES NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-266-2622, 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
170A742-027
NSN: 5315-01-266-2622
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 17454 — TIMKEN GEARS & SERVICES INC. DIV PHILADELPHIA GEAR (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_width0.500 INCHES NOMINAL IN
overall_height0.500 INCHES NOMINAL IN
overall_length1.668 INCHES MINIMUM AND 1.708 INCHES MAXIMUM IN
style_designatorOCTAGON SHAPE
key_chamfer_angle45.0 DEGREES NOMINAL
key_chamfer_length0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
starting_edge_shapeCHAMFERED
NSN5315-01-266-2622
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 170A742-027 · 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
•
KEY CHAMFER ANGLE: 45.0 DEGREES NOMINAL
•
STARTING EDGE SHAPE: CHAMFERED
•
STYLE DESIGNATOR: OCTAGON SHAPE
•
KEY CHAMFER LENGTH: 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.500 INCHES NOMINAL IN
KEY CHAMFER ANGLE45.0 DEGREES NOMINAL
STARTING EDGE SHAPECHAMFERED
STYLE DESIGNATOROCTAGON SHAPE
OVERALL LENGTH1.668 INCHES MINIMUM AND 1.708 INCHES MAXIMUM IN
OVERALL WIDTH0.500 INCHES NOMINAL IN
KEY CHAMFER LENGTH0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
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
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FREQUENTLY ASKED QUESTIONS
What is 170A742-027?
170A742-027 is a KEY,MACHINE.
What is the NSN for 170A742-027?
170A742-027 is cataloged in the U.S. Government catalog under NSN 5315-01-266-2622. This indicates validated use in U.S. government and defense supply chains.
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✓ 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.