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6857577 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6857577: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN, material: STEEL COMP 303 STANDOFF, thread_class: 2A RIGHT EXTERNAL A, flange_thickness: 0.995 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN, style_designator: FLANGED WITH LEFT INTERNAL THREAD, thread_direction: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD). This part is cataloged in the U.S.

Government catalog under NSN 5340-01-172-2659, 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
6857577
NSN: 5340-01-172-2659
FSC: 5340 — Hardware, Commercial
CAGE: 03640 — LOCKHEED MARTIN CORPORATION DIV ROTARY AND MISSION SYSTEMS (USA)
SPECIFICATIONS
length1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN
materialSTEEL COMP 303 STANDOFF
thread_class2A RIGHT EXTERNAL A
flange_thickness0.995 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
style_designatorFLANGED WITH LEFT INTERNAL THREAD
thread_directionRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
surface_treatmentPASSIVATE STANDOFF
nominal_thread_size0.112 INCHES RIGHT EXTERNAL IN
thread_quantity_per_inch40 RIGHT EXTERNAL
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD)
flange_width_across_flats0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
material_document_and_classificationASTM A581 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE STANDOFF
NSN5340-01-172-2659
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6857577 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
•
FLANGE WIDTH ACROSS FLATS: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
•
LENGTH: 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STANDOFF
•
FLANGE THICKNESS: 0.995 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: FLANGED WITH LEFT INTERNAL THREAD
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A581 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE STANDOFF
•
THREAD DIRECTION: RIGHT-HAND RIGHT EXTERNAL
TECHNICAL CHARACTERISTICS
FLANGE WIDTH ACROSS FLATS0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
LENGTH1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STANDOFF
FLANGE THICKNESS0.995 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
STYLE DESIGNATORFLANGED WITH LEFT INTERNAL THREAD
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A581 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE STANDOFF
THREAD DIRECTIONRIGHT-HAND RIGHT EXTERNAL
THREAD DIRECTIONRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
NOMINAL THREAD SIZE0.112 INCHES RIGHT EXTERNAL IN
NOMINAL THREAD SIZE0.112 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) 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 6857577?
6857577 is a STANDOFF,THREADED,SPACING.
What is the NSN for 6857577?
6857577 is cataloged in the U.S. Government catalog under NSN 5340-01-172-2659. 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.