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4D138 — PIN,STRAIGHT,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4D138: PIN,STRAIGHT,HEADED.

The PIN,STRAIGHT,HEADED is a the manufacturer industrial component. Key specifications include height: 0.125 INCHES NOMINAL IN, diameter: 0.623 INCHES NOMINAL IN, material: STEEL COMP 1018 OVERALL, head_style: FLAT CHAMFER, style_designator: STRAIGHT, pin_head_diameter: 0.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-181-6207, 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
4D138
NSN: 5315-01-181-6207
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 2Y614 — LINK-BELT CRANES, L.P., LLLP (USA)
SPECIFICATIONS
height0.125 INCHES NOMINAL IN
diameter0.623 INCHES NOMINAL IN
materialSTEEL COMP 1018 OVERALL
head_styleFLAT CHAMFER
style_designatorSTRAIGHT
pin_head_diameter0.750 INCHES NOMINAL IN
under_head_length2.562 INCHES NOMINAL IN
first_hole_diameter0.203 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
hole_arrangement_styleONE END DRILLED
distance_from_centerline_of_hole_to_end_of_pin0.312 INCHES NOMINAL IN
NSN5315-01-181-6207
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4D138 · 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
•
HOLE ARRANGEMENT STYLE: ONE END DRILLED
•
UNDER HEAD LENGTH: 2.562 INCHES NOMINAL IN
•
FIRST HOLE DIAMETER: 0.203 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: STRAIGHT
•
PIN HEAD DIAMETER: 0.750 INCHES NOMINAL IN
•
DIAMETER: 0.623 INCHES NOMINAL IN
•
HEAD STYLE: FLAT CHAMFER
•
HEIGHT: 0.125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
HOLE ARRANGEMENT STYLEONE END DRILLED
UNDER HEAD LENGTH2.562 INCHES NOMINAL IN
FIRST HOLE DIAMETER0.203 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
STYLE DESIGNATORSTRAIGHT
PIN HEAD DIAMETER0.750 INCHES NOMINAL IN
DIAMETER0.623 INCHES NOMINAL IN
HEAD STYLEFLAT CHAMFER
HEIGHT0.125 INCHES NOMINAL IN
MATERIALSTEEL COMP 1018 OVERALL
DISTANCE FROM CENTERLINE OF HOLE TO END OF PIN0.312 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: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4D138?
4D138 is a PIN,STRAIGHT,HEADED.
What is the NSN for 4D138?
4D138 is cataloged in the U.S. Government catalog under NSN 5315-01-181-6207. 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.