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163-28AL-440S — STANDOFF,THREADED,SNAP-IN

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

163-28AL-440S: STANDOFF,THREADED,SNAP-IN.

The STANDOFF,THREADED,SNAP-IN is a the manufacturer industrial component. Key specifications include length: 1.875 INCHES NOMINAL IN, material: ALUMINUM ALLOY 3003 OVERALL, thread_length: 0.250 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN, style_designator: LEFT INTERNAL AND RIGHT EXTERNAL THREAD, thread_direction: LEFT-HAND LEFT INTERNAL (INCLUDES THRU THREAD), surface_treatment: CHROMATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-406-1205, 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
163-28AL-440S
NSN: 5340-01-406-1205
FSC: 5340 — Hardware, Commercial
CAGE: 57177 — PROMPTUS ELECTONIC HARDWARE INC (USA)
SPECIFICATIONS
length1.875 INCHES NOMINAL IN
materialALUMINUM ALLOY 3003 OVERALL
thread_length0.250 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN
style_designatorLEFT INTERNAL AND RIGHT EXTERNAL THREAD
thread_directionLEFT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
surface_treatmentCHROMATE OVERALL
nominal_thread_size0.187 INCHES RIGHT EXTERNAL IN
end_item_identificationSTINGER MISSILE NIGHT SIGHT
right_projection_length0.187 INCHES NOMINAL IN
thread_quantity_per_inch40 RIGHT EXTERNAL
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD)
right_projection_diameter0.112 INCHES NOMINAL IN
NSN5340-01-406-1205
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 163-28AL-440S 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: 1.875 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541C MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.250 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN
•
STYLE DESIGNATOR: LEFT INTERNAL AND RIGHT EXTERNAL THREAD
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225A,COMP 2,T-3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL A
•
THREAD DIRECTION: RIGHT-HAND RIGHT EXTERNAL
TECHNICAL CHARACTERISTICS
LENGTH1.875 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541C MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.250 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN
THREAD LENGTH0.187 INCHES NOMINAL RIGHT EXTERNAL IN
STYLE DESIGNATORLEFT INTERNAL AND RIGHT EXTERNAL THREAD
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225A,COMP 2,T-3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL A
THREAD DIRECTIONRIGHT-HAND RIGHT EXTERNAL
THREAD DIRECTIONLEFT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
NOMINAL THREAD SIZE0.187 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
NOMINAL THREAD SIZE0.187 INCHES RIGHT EXTERNAL 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 2
1357-M06-F13-440Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1002686-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 163-28AL-440S?
163-28AL-440S is a STANDOFF,THREADED,SNAP-IN.
What parts can replace 163-28AL-440S?
There are 2 known substitutes for 163-28AL-440S: 1357-M06-F13-440, 1002686-2. Substitute compatibility should be verified for your specific system.
What is the NSN for 163-28AL-440S?
163-28AL-440S is cataloged in the U.S. Government catalog under NSN 5340-01-406-1205. 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.