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161550 — Technical Data Sheet

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— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

CAPACITOR,FIXED,CERAMIC DIELECTR. Key specifications include material: STEEL COMP 4130 OVERALL, nut_style: SLEEVE, nut_length: 0.250 INCHES NOMINAL IN, body_height: 0.165 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN, thread_class: 2B, boss_diameter: 0.937 INCHES NOMINAL OVERALL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5310-00-955-6183, 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
161550
NSN: 5310-00-955-6183
FSC: 5310
CAGE: 76823 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN IS DIV NORTHROP GRUMMAN AERONAUTICS SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
nut_styleSLEEVE
nut_length0.250 INCHES NOMINAL IN
body_height0.165 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
thread_class2B
boss_diameter0.937 INCHES NOMINAL OVERALL IN
thread_seriesUNF
boss_thickness0.125 INCHES NOMINAL OVERALL IN
thread_directionRIGHT-HAND
countersink_angle90.0 DEGREES NOMINAL BOTH ENDS
features_providedHERMETICALLY SEALED AND BURN IN AND MONOLITHIC AND POSITIVE OUTPUTS AND FIXED AND W/RESISTOR
surface_treatmentCADMIUM OVERALL
NSN5310-00-955-6183
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 161550 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
COUNTERSINK ANGLE: 90.0 DEGREES NOMINAL BOTH ENDS
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6758,COND F4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE I,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE: HEXAGONAL NUT
•
NUT WIDTH ACROSS FLATS: 1.125 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 16
•
THREAD SERIES: UNF
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS
COUNTERSINK ANGLE90.0 DEGREES NOMINAL BOTH ENDS
SURFACE TREATMENTCADMIUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6758,COND F4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE I,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
CROSS-SECTIONAL SHAPEHEXAGONAL NUT
NUT WIDTH ACROSS FLATS1.125 INCHES NOMINAL IN
THREAD QUANTITY PER INCH16
THREAD SERIESUNF
BOSS THICKNESS0.125 INCHES NOMINAL OVERALL IN
NOMINAL THREAD SIZE0.750 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
34 867-085InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
407361InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LM140AH15-883BInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
5310PL0784720InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
60B46563InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LM140LAH-15/883InterchangeableGOVERNMENT REGISTRY
Capacitor,fixed,ceramic Dielectr
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 161550?
161550 is a CAPACITOR,FIXED,CERAMIC DIELECTR.
What parts can replace 161550?
There are 11 known substitutes for 161550: 34 867-085, 407361, LM140AH15-883B and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 161550?
161550 is cataloged in the Federal Logistics Information System under NSN 5310-00-955-6183. This indicates validated use in U.S. government and defense supply chains.
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Last verified: September 2026