4-40UNC2A3/4LGANSIB18.6.3FLAT HD
View detailed technical data, stock status, and sourcing information for: 4-40UNC2A3/4LGANSIB18.6.3FLAT HD
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for part 4-40UNC2A3/4LGANSIB18.6.3FLAT HD to receive an up to date pricing and availability quote by email.
An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes:bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.
2a thread class, 0.750 inches nominal fastener length, 0.683 inches nominal thread length, right-hand thread direction, flat countersunk head style
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
- 0.683 inches nominal
- Fastener Length
- 0.750 inches nominal
- Head Style
- flat countersunk
- Head Diameter
- 0.207 inches minimum and 0.225 inches maximum
- Internal Drive Style
- cross recess type ii
- Nominal Thread Diameter
- 0.112 inches
- Thread Quantity Per Inch
- 40
- Countersink Angle
- 80.0 degrees minimum and 82.0 degrees maximum
- Screw Material
- steel comp 301 or steel comp 430
- Screw Material Document And Classification
- ifi-104 assn std all material responses
- Screw Surface Treatment
- passivate
- Supplementary Features
- arinc-king pt list 006-8024-05,similar to nsn 5305-00-727-8831
- Thread Series Designator
- unc
- Specification/Standard Data
- 22373-089-5436 manufacturers specification control and 80204-ansi b18.6.3 professional/industrial association standard
- Nondefinitive Spec/Std Data
- 1 table and 4-40 size and 3/4in. length and stls/stl material
- Departure From Cited Document
- as modified by material
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 |
|---|---|
| 089-5436-12 | Machine Screw |
| 089K-5436-12 | Machine Screw |
| 4-40UNC2A3/4LGANSIB18.6.3FLAT HD | Machine Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-01-226-0794?
Does the NSN 5305-01-226-0794 have a Schedule B code assigned?
Does NSN 5305-01-226-0794 require demilitarization?
Does NSN 5305-01-226-0794 contain precious materials?
Does NSN 5305-01-226-0794 contain hazardous materials?
When the NSN 5305-01-226-0794 was assigned to the Federal Catalog?
Professional Distribution
Certified to meet the strict requirements of defense, aerospace, and hazardous materials distribution.
- ITAR Registered
- DDTC Registered
- HAZMAT Certified
- AS9120 Quality Standards
- 100% Quality Inspections
You May Also Like
Browse other in-demand NSN parts sourced by professionals in defense, aerospace, and manufacturing sectors. Each component meets strict standards for quality and performance.
Pricing
Submit your request below and our team will respond quickly with up-to-date pricing, delivery estimates, and stock information:
