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SS304-4C-12 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

SS304-4C-12: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 0.2500 INCHES NOMINAL IN, diameter: 0.2500 INCHES NOMINAL IN, material: ALUMINUM ALLOY 3003 STANDOFF, thread_class: 2B LEFT INTERNAL (INCLUDES THRU THREAD), hole_diameter: 0.1500 INCHES NOMINAL IN, thread_length: 0.2440 INCHES MINIMUM AND 0.2560 INCHES MAXIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-397-5937, 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
SS304-4C-12
NSN: 5340-01-397-5937
FSC: 5340 — Hardware, Commercial
CAGE: 04729 — UNICORP. (USA)
SPECIFICATIONS
length0.2500 INCHES NOMINAL IN
diameter0.2500 INCHES NOMINAL IN
materialALUMINUM ALLOY 3003 STANDOFF
thread_class2B LEFT INTERNAL (INCLUDES THRU THREAD)
hole_diameter0.1500 INCHES NOMINAL IN
thread_length0.2440 INCHES MINIMUM AND 0.2560 INCHES MAXIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN
style_designatorPROJECTION ONE END LEFT INTERNAL THREAD
thread_directionRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
surface_treatmentCHROMATE STANDOFF
nominal_thread_size0.1120 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
cross-sectional_shapeROUND
right_projection_length0.0910 INCHES MINIMUM AND 0.0970 INCHES MAXIMUM IN
NSN5340-01-397-5937
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: SS304-4C-12 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: 0.2500 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541C MIL SPEC SINGLE TREATMENT RESPONSE STANDOFF
•
THREAD LENGTH: 0.2440 INCHES MINIMUM AND 0.2560 INCHES MAXIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN
•
STYLE DESIGNATOR: PROJECTION ONE END LEFT INTERNAL THREAD
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225A,COMP 2 ,T-3 FED SPEC SINGLE MATERIAL RESPONSE STANDOFF A
•
DIAMETER: 0.2500 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
•
NOMINAL THREAD SIZE: 0.1120 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
TECHNICAL CHARACTERISTICS
LENGTH0.2500 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541C MIL SPEC SINGLE TREATMENT RESPONSE STANDOFF
THREAD LENGTH0.2440 INCHES MINIMUM AND 0.2560 INCHES MAXIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN
STYLE DESIGNATORPROJECTION ONE END LEFT INTERNAL THREAD
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225A,COMP 2 ,T-3 FED SPEC SINGLE MATERIAL RESPONSE STANDOFF A
DIAMETER0.2500 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
NOMINAL THREAD SIZE0.1120 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
CROSS-SECTIONAL SHAPEROUND
SURFACE TREATMENTCHROMATE STANDOFF
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 SS304-4C-12?
SS304-4C-12 is a STANDOFF,THREADED,SPACING.
What is the NSN for SS304-4C-12?
SS304-4C-12 is cataloged in the U.S. Government catalog under NSN 5340-01-397-5937. 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.