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3G11178-101 — KEY,MACHINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3G11178-101: KEY,MACHINE.

The KEY,MACHINE is a the manufacturer industrial component. Key specifications include radius: 0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN, material: STEEL COMP 4130 OVERALL, flat_height: 0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN, overall_width: 0.250 INCHES NOMINAL IN, overall_height: 0.312 INCHES NOMINAL IN, overall_length: 1.468 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-911-7108, 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
3G11178-101
NSN: 5315-00-911-7108
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
radius0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
materialSTEEL COMP 4130 OVERALL
flat_height0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
overall_width0.250 INCHES NOMINAL IN
overall_height0.312 INCHES NOMINAL IN
overall_length1.468 INCHES NOMINAL IN
style_designatorSTEPPED
first_flat_length1.250 INCHES NOMINAL IN
key_chamfer_angle45.0 DEGREES NOMINAL
surface_treatmentCADMIUM OVERALL
key_chamfer_length0.030 INCHES NOMINAL IN
starting_edge_shapeCHAMFERED
NSN5315-00-911-7108
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3G11178-101 · 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
•
RADIUS: 0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
•
FIRST FLAT LENGTH: 1.250 INCHES NOMINAL IN
•
STARTING EDGE SHAPE: CHAMFERED
•
STYLE DESIGNATOR: STEPPED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6758 MIL SPEC ALL MATERIAL RESPONSES OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.312 INCHES NOMINAL IN
KEY CHAMFER ANGLE45.0 DEGREES NOMINAL
RADIUS0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
FIRST FLAT LENGTH1.250 INCHES NOMINAL IN
STARTING EDGE SHAPECHAMFERED
STYLE DESIGNATORSTEPPED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6758 MIL SPEC ALL MATERIAL RESPONSES OVERALL
OVERALL LENGTH1.468 INCHES NOMINAL IN
OVERALL WIDTH0.250 INCHES NOMINAL IN
KEY CHAMFER LENGTH0.030 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 3G11178-101?
3G11178-101 is a KEY,MACHINE.
What is the NSN for 3G11178-101?
3G11178-101 is cataloged in the U.S. Government catalog under NSN 5315-00-911-7108. 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.