PartsTable
Technical Data Sheet
Download PDF

121078 — PIN,STRAIGHT,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

121078: PIN,STRAIGHT,HEADED.

The PIN,STRAIGHT,HEADED is a the manufacturer industrial component. Key specifications include height: 0.500 INCHES NOMINAL IN, diameter: 1.750 INCHES NOMINAL IN, material: IRON CAST OVERALL, head_style: SQUARE, head_width: 3.000 INCHES NOMINAL IN, slot_width: 0.437 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-243-2570, 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
121078
NSN: 5315-00-243-2570
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 06CF4 — FABCO MACHINE SERVICES (USA)
SPECIFICATIONS
height0.500 INCHES NOMINAL IN
diameter1.750 INCHES NOMINAL IN
materialIRON CAST OVERALL
head_styleSQUARE
head_width3.000 INCHES NOMINAL IN
slot_width0.437 INCHES NOMINAL IN
slot_length2.500 INCHES NOMINAL IN
chamfer_length1.125 INCHES NOMINAL IN
style_designatorSTRAIGHT
features_providedCASEHARDENED
pin_chamfer_angle45.0 DEGREES NOMINAL
under_head_length14.000 INCHES NOMINAL IN
NSN5315-00-243-2570
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 121078 · 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
•
CHAMFER LENGTH: 1.125 INCHES NOMINAL IN
•
HEAD WIDTH: 3.000 INCHES NOMINAL IN
•
UNDER HEAD LENGTH: 14.000 INCHES NOMINAL IN
•
PIN CHAMFER ANGLE: 45.0 DEGREES NOMINAL
•
STYLE DESIGNATOR: STRAIGHT
•
DIAMETER: 1.750 INCHES NOMINAL IN
•
FEATURES PROVIDED: CASEHARDENED
•
HEAD STYLE: SQUARE
TECHNICAL CHARACTERISTICS
CHAMFER LENGTH1.125 INCHES NOMINAL IN
HEAD WIDTH3.000 INCHES NOMINAL IN
UNDER HEAD LENGTH14.000 INCHES NOMINAL IN
PIN CHAMFER ANGLE45.0 DEGREES NOMINAL
STYLE DESIGNATORSTRAIGHT
DIAMETER1.750 INCHES NOMINAL IN
FEATURES PROVIDEDCASEHARDENED
HEAD STYLESQUARE
HEIGHT0.500 INCHES NOMINAL IN
MATERIALIRON CAST OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
MILP82409CGReference document
Same NSN cross-reference
Reference document — Identification reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 121078?
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 121078?
121078 is a PIN,STRAIGHT,HEADED.
What parts can replace 121078?
There is 1 known substitute for 121078: MILP82409CG. Substitute compatibility should be verified for your specific system.
What is the NSN for 121078?
121078 is cataloged in the U.S. Government catalog under NSN 5315-00-243-2570. 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 — 121078

✓ 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.