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751625-1-1 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

751625-1-1: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include design_type: SOLID, end_diameter: 0.3500 INCHES MINIMUM AND 0.3520 INCHES MAXIMUM IN, overall_height: 0.2200 INCHES NOMINAL IN, counterbore_length: 0.1450 INCHES MINIMUM AND 0.1550 INCHES MAXIMUM IN, first_step_diameter: 0.4600 INCHES NOMINAL IN, chamfer_angle_in_deg: 30.0. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-008-1698, 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
751625-1-1
NSN: 5340-01-008-1698
FSC: 5340 — Hardware, Commercial
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
design_typeSOLID
end_diameter0.3500 INCHES MINIMUM AND 0.3520 INCHES MAXIMUM IN
overall_height0.2200 INCHES NOMINAL IN
counterbore_length0.1450 INCHES MINIMUM AND 0.1550 INCHES MAXIMUM IN
first_step_diameter0.4600 INCHES NOMINAL IN
chamfer_angle_in_deg30.0
counterbore_diameter0.1330 INCHES MINIMUM AND 0.1350 INCHES MAXIMUM IN
countersink_diameter0.1800 INCHES NOMINAL IN
countersink_angle_in_deg90.0
material_hardness_rating38.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM
distance_from_end_to_first_step0.1600 INCHES MINIMUM AND 0.1700 INCHES MAXIMUM IN
NSN5340-01-008-1698
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 751625-1-1 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
•
COUNTERSINK ANGLE IN DEG: 90.0
•
FIRST STEP DIAMETER: 0.4600 INCHES NOMINAL IN
•
MATERIAL HARDNESS RATING: 38.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM
•
END DIAMETER: 0.3500 INCHES MINIMUM AND 0.3520 INCHES MAXIMUM IN
•
COUNTERSINK DIAMETER: 0.1800 INCHES NOMINAL IN
•
DISTANCE FROM END TO FIRST STEP: 0.1600 INCHES MINIMUM AND 0.1700 INCHES MAXIMUM IN
•
DESIGN TYPE: SOLID
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.2200 INCHES NOMINAL IN
COUNTERSINK ANGLE IN DEG90.0
FIRST STEP DIAMETER0.4600 INCHES NOMINAL IN
MATERIAL HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM
END DIAMETER0.3500 INCHES MINIMUM AND 0.3520 INCHES MAXIMUM IN
COUNTERSINK DIAMETER0.1800 INCHES NOMINAL IN
DISTANCE FROM END TO FIRST STEP0.1600 INCHES MINIMUM AND 0.1700 INCHES MAXIMUM IN
DESIGN TYPESOLID
COUNTERBORE LENGTH0.1450 INCHES MINIMUM AND 0.1550 INCHES MAXIMUM IN
COUNTERBORE DIAMETER0.1330 INCHES MINIMUM AND 0.1350 INCHES MAXIMUM IN
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 751625-1-1?
751625-1-1 is a SEAT,HELICAL COMPRESSION SPRING.
What is the NSN for 751625-1-1?
751625-1-1 is cataloged in the U.S. Government catalog under NSN 5340-01-008-1698. 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.