5305-01-566-3173
Find complete technical information, availability, and procurement data for: 5305-01-566-3173
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A washer, round in shape, and having a centrally located hole. One bearing surface is flat and unbroken, the other surface is in the form of a raised shoulder (boss) having a flat bearing surface. The thickness of the shoulder (boss) must not exceed 25 percent of the shoulder (boss) diameter. For items having a shoulder (boss) of greater thickness, use bearing, sleeve; bushing sleeve; or spacer, sleeve. Excludes:insulator, washer and thrust type washers.
pan no. 2 head style, 0.230 inches minimum and 0.250 inches maximum fastener length, 2a thread class, right-hand thread direction, 0.145 inches minimum and 0.156 inches maximum head diameter
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Thread Class
- 2a
- Thread Direction
- right-hand
- Fastener Length
- 0.230 inches minimum and 0.250 inches maximum
- Head Style
- pan no. 2
- Head Diameter
- 0.145 inches minimum and 0.156 inches maximum
- Head Height
- 0.053 inches minimum and 0.062 inches maximum
- Washer Quantity
- 2
- Internal Drive Style
- cross recess type ii
- Nominal Thread Diameter
- 0.086 inches
- Thread Quantity Per Inch
- 56
- Secondary Washer Relationship To Primary Washer
- not identical
- Secondary Washer Style
- flat
- Primary Washer Outside Diameter
- 0.145 inches minimum and 0.156 inches maximum
- Secondary Washer Outside Diameter
- 0.225 inches minimum and 0.235 inches maximum
- Primary Washer Style
- split helical ring
- Primary Washer Material Thickness
- 0.018 inches minimum and 0.038 inches maximum
- Secondary Washer Material Thickness
- 0.010 inches minimum and 0.030 inches maximum
- Part Name Assigned By Controlling Agency
- screw, pan head, phillips, double sems
- Material
- steel property class 18.8 fastener
- Material
- steel property class 18.8 primary washer
- Material
- steel property class 18.8 secondary washer
- Surface Treatment
- passivate overall
- Surface Treatment Document And Classification
- astm a380 assn std single treatment response overall
- Thread Series Designator
- unc
Related Parts
This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:
| Part Number | Name |
|---|---|
| A3307785-1 | Assembled Washer Screw |
FAQs
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