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S10021-26 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

S10021-26: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 0.188 INCHES NOMINAL IN, material: STEEL CORROSION RESISTING STANDOFF, style_designator: PROJECTION ONE END W/ RIGHT EXTERNAL THREAD, thread_direction: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD), width_across_flats: 1.500 INCHES NOMINAL IN, nominal_thread_size: 8.0 MILLIMETERS LEFT INTERNAL (INCLUDES THRU THREAD) MM. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-398-3597, 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
S10021-26
NSN: 5340-01-398-3597
FSC: 5340 — Hardware, Commercial
CAGE: 05395 — L3HARRIS TECHNOLOGIES INTEGRATED SYSTEMS L.P. DBA L3HARRIS TECHNOLOGIES (USA)
SPECIFICATIONS
length0.188 INCHES NOMINAL IN
materialSTEEL CORROSION RESISTING STANDOFF
style_designatorPROJECTION ONE END W/ RIGHT EXTERNAL THREAD
thread_directionRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
width_across_flats1.500 INCHES NOMINAL IN
nominal_thread_size8.0 MILLIMETERS LEFT INTERNAL (INCLUDES THRU THREAD) MM
cross-sectional_shapeHEXAGON
right_projection_length0.250 INCHES NOMINAL IN
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD)
right_projection_diameter0.250 INCHES NOMINAL IN
surface_treatment_document_and_classificationQQ-Z-325C TYPE 1 CLASS 3 FED SPEC 1ST TREATMENT RESPONSE STANDOFF
NSN5340-01-398-3597
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: S10021-26 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
•
WIDTH ACROSS FLATS: 1.500 INCHES NOMINAL IN
•
LENGTH: 0.188 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-Z-325C TYPE 1 CLASS 3 FED SPEC 1ST TREATMENT RESPONSE STANDOFF
•
STYLE DESIGNATOR: PROJECTION ONE END W/ RIGHT EXTERNAL THREAD
•
THREAD DIRECTION: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
•
NOMINAL THREAD SIZE: 8.0 MILLIMETERS LEFT INTERNAL (INCLUDES THRU THREAD) MM
•
CROSS-SECTIONAL SHAPE: HEXAGON
•
MATERIAL: STEEL CORROSION RESISTING STANDOFF
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.500 INCHES NOMINAL IN
LENGTH0.188 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-Z-325C TYPE 1 CLASS 3 FED SPEC 1ST TREATMENT RESPONSE STANDOFF
STYLE DESIGNATORPROJECTION ONE END W/ RIGHT EXTERNAL THREAD
THREAD DIRECTIONRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
NOMINAL THREAD SIZE8.0 MILLIMETERS LEFT INTERNAL (INCLUDES THRU THREAD) MM
CROSS-SECTIONAL SHAPEHEXAGON
MATERIALSTEEL CORROSION RESISTING STANDOFF
RIGHT PROJECTION DIAMETER0.250 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD)
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 1
9747-SS-0440-7Reference 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 S10021-26?
S10021-26 is a STANDOFF,THREADED,SPACING.
What parts can replace S10021-26?
There is 1 known substitute for S10021-26: 9747-SS-0440-7. Substitute compatibility should be verified for your specific system.
What is the NSN for S10021-26?
S10021-26 is cataloged in the U.S. Government catalog under NSN 5340-01-398-3597. 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.