B3110-2
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An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in.) (1.5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is designed to be driven with either a wrench or an inserted driver or both in sizes below no. 10 (0.190 in.) (5 mm) nominal diameter. No. 10 (0.190 in.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. A locking feature may be incorporated in the design of the head or threads. For items which are both shouldered and have an externally relieved body, use screw, externally relieved body. For items with a no. 10 (0.190 in.) (5 mm) or larger thread diameter without an inserted driver head, use bolt, shoulder. Excludes:bolt, internal wrenching and screw, cap, socket head.
right-hand thread direction, 0.406 inches minimum and 0.438 inches maximum fastener length, flat countersunk head style, 0.129 inches minimum and 0.191 inches maximum thread length, 2a thread class
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
- Thread Length
- 0.129 inches minimum and 0.191 inches maximum
- Fastener Length
- 0.406 inches minimum and 0.438 inches maximum
- Head Style
- flat countersunk
- Head Diameter
- 0.223 inches nominal
- Shoulder Diameter
- 0.141 inches minimum and 0.143 inches maximum first shoulder
- Shoulder Length
- 0.145 inches minimum and 0.175 inches maximum first shoulder
- Internal Drive Style
- slot
- Nominal Thread Diameter
- 0.138 inches
- Thread Quantity Per Inch
- 32
- Hardness Rating
- 33.0 rockwell c nominal overall
- Countersink Angle
- 100.0 degrees nominal
- Shoulder Shape
- round first shoulder
- Special Features
- top of head painted red
- Material
- steel comp 4037 overall
- Surface Treatment
- cadmium overall
- Surface Treatment
- paint head
- Surface Treatment Document And Classification
- qq-p-416,ty 2,cl 2 fed spec single treatment response overall
- Thread Series Designator
- unc
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FAQs
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When the NSN 5305-00-830-2998 was assigned to the Federal Catalog?
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