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5189957 — KEY,MACHINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5189957: KEY,MACHINE.

The KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, flat_height: 0.590 INCHES NOMINAL IN, overall_width: 1.000 INCHES NOMINAL IN, overall_height: 2.230 INCHES NOMINAL IN, overall_length: 2.180 INCHES NOMINAL IN, style_designator: STEPPED. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-294-6838, 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
5189957
NSN: 5315-01-294-6838
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 15090 — RAYTHEON COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
flat_height0.590 INCHES NOMINAL IN
overall_width1.000 INCHES NOMINAL IN
overall_height2.230 INCHES NOMINAL IN
overall_length2.180 INCHES NOMINAL IN
style_designatorSTEPPED
counterbore_depth0.310 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN
first_flat_length1.590 INCHES NOMINAL IN
surface_treatmentPLASTIC POLYURETHANE OVERALL
mounting_hole_depth1.140 INCHES MINIMUM AND 1.220 INCHES MAXIMUM IN
starting_edge_shapeSTRAIGHT
counterbore_diameter0.437 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
NSN5315-01-294-6838
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5189957 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-81773 WITH FEDERAL STANDARD 595 NUMBER 17875,COLOR INSIGNIA WHITE MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
FIRST FLAT LENGTH: 1.590 INCHES NOMINAL IN
•
MOUNTING HOLE TYPE AND QUANTITY: 1 THREADED AND 2 UNTHREADED-COUNTERBORED
•
STARTING EDGE SHAPE: STRAIGHT
•
STYLE DESIGNATOR: STEPPED
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5640,COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MOUNTING HOLE DIAMETER: 0.297 INCHES MINIMUM AND 0.386 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT2.230 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-81773 WITH FEDERAL STANDARD 595 NUMBER 17875,COLOR INSIGNIA WHITE MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
FIRST FLAT LENGTH1.590 INCHES NOMINAL IN
MOUNTING HOLE TYPE AND QUANTITY1 THREADED AND 2 UNTHREADED-COUNTERBORED
STARTING EDGE SHAPESTRAIGHT
STYLE DESIGNATORSTEPPED
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5640,COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MOUNTING HOLE DIAMETER0.297 INCHES MINIMUM AND 0.386 INCHES MAXIMUM IN
OVERALL LENGTH2.180 INCHES NOMINAL IN
OVERALL WIDTH1.000 INCHES NOMINAL 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
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FREQUENTLY ASKED QUESTIONS
What is 5189957?
5189957 is a KEY,MACHINE.
What is the NSN for 5189957?
5189957 is cataloged in the U.S. Government catalog under NSN 5315-01-294-6838. 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.