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128HM10512-13 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

128HM10512-13: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 2.420 INCHES NOMINAL IN, diameter: 0.652 INCHES MINIMUM AND 0.657 INCHES MAXIMUM IN, style_designator: LEFT INTERNAL THREAD, cross-sectional_shape: ROUND, left_end_chamfer_depth: 0.060 INCHES NOMINAL IN, right_end_chamfer_angle: 45.0 DEGREES NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-272-4943, 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
128HM10512-13
NSN: 5340-01-272-4943
FSC: 5340 — Hardware, Commercial
CAGE: 79RG9 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
length2.420 INCHES NOMINAL IN
diameter0.652 INCHES MINIMUM AND 0.657 INCHES MAXIMUM IN
style_designatorLEFT INTERNAL THREAD
cross-sectional_shapeROUND
left_end_chamfer_depth0.060 INCHES NOMINAL IN
right_end_chamfer_angle45.0 DEGREES NOMINAL
distance_from_end_to_hole_center0.380 INCHES NOMINAL IN
hole_quantity_perpendicular_to_axis1
NSN5340-01-272-4943
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 128HM10512-13 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
LENGTH: 2.420 INCHES NOMINAL IN
•
STYLE DESIGNATOR: LEFT INTERNAL THREAD
•
DIAMETER: 0.652 INCHES MINIMUM AND 0.657 INCHES MAXIMUM IN
•
RIGHT END CHAMFER ANGLE: 45.0 DEGREES NOMINAL
•
CROSS-SECTIONAL SHAPE: ROUND
•
DISTANCE FROM END TO HOLE CENTER: 0.380 INCHES NOMINAL IN
•
LEFT END CHAMFER DEPTH: 0.060 INCHES NOMINAL IN
•
HOLE QUANTITY PERPENDICULAR TO AXIS: 1
TECHNICAL CHARACTERISTICS
LENGTH2.420 INCHES NOMINAL IN
STYLE DESIGNATORLEFT INTERNAL THREAD
DIAMETER0.652 INCHES MINIMUM AND 0.657 INCHES MAXIMUM IN
RIGHT END CHAMFER ANGLE45.0 DEGREES NOMINAL
CROSS-SECTIONAL SHAPEROUND
DISTANCE FROM END TO HOLE CENTER0.380 INCHES NOMINAL IN
LEFT END CHAMFER DEPTH0.060 INCHES NOMINAL IN
HOLE QUANTITY PERPENDICULAR TO AXIS1
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
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 128HM10512-13?
128HM10512-13 is a STANDOFF,THREADED,SPACING.
What is the NSN for 128HM10512-13?
128HM10512-13 is cataloged in the U.S. Government catalog under NSN 5340-01-272-4943. 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.