1/2" x 13 TPI UNC Coarse Stainless A4-40 G316 Hex Thin Lock Nuts ANSI B18.2.2

$6.00

In stock

SKU

41LSC12M

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SKU: 41LSC12M

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Technical Specifications

Specs - Thin Lock Nut UNC BSW Coarse Stainless G316.pdf Thread Pitch Chart.pdf Imperial vs Metric Strength Chart.pdf Nut Mechanical Properties.pdf

System of Measurement Imperial
Product Thin Lock Nut
Size 1/2"
Size & Thread Pitch 1/2" x 13 TPI UNC
Thread Pitch 13 TPI
Thread Coarse
Thread Direction Right Hand
Corrosion Protection Level Ultimate
Class Grade A4-40 G316
Material Stainless Steel
Across Flats (af) 0.736 - 0.750" (18.70 - 19.05mm)
Across Corners (ac) 0.840 - 0.866" (21.34 - 22.00mm)
Nut Height Overall (b) 0.302 - 0.323" (7.68 - 8.21mm)
Spanner Size (af) 3/4"
Closest size in mm M12 (12mm)
Standard Made To ANSI B18.2.2
Brand Hobson Engineering
Alternative Brands Inox World

Dimensional data is a guide only. Tolerance differences exist between brands and batches

Description

Hex Thin Lock nuts are also referred to as lock or jam nuts. The correct use of a thin nut is to install it under the larger nut. The thin nut deforms and creates a locking action on the thread as the larger nut is tightened. Therefore the thin nut is more effective when it is soft
Also known as: Hex Jam Nuts, Jam Lock Nuts, Half Nuts
Material / Coating: Marine Grade Stainless Steel A4-40 G316 is the ultimate corrosion resistance fastener. Designed to be used in all conditions. It is the best material to use in marine, coastal, chemical and food environments. Stainless steels are largely non-magnetic, but it is not uncommon for some stainless steel fasteners to show a small degree of magnetism. This is partly due to the manufacturing process. Marine Grade Stainless Steel A4 G316 can be easily identified by the following markings: A4, A4-40, 316 or G316. Small sized Nuts are generally not stamped
Can Stainless corrode?: Stainless steel is corrosion-resistant but not corrosion-proof and corrosion can occur if the material is installed or handled incorrectly. The use of tools and drills made from conventional steel during the installation of stainless steel fasteners may also lead to problems. Even the hardest of tools can produce debris that leaves minute steel particles on the stainless steel fastener surfaces or in pre-drilled holes. It is these particles that often rust when exposed to moisture or oxygen and can result in a stained or tarnished finish to the stainless steel material
Galling: can occur when excessive pressure is used to tighten a nut onto a thread, common with stainless fasteners but can also be an issue with other materials. Fasteners with damaged or fine threads are particularly prone to galling.
Some suggestions to help prevent thread galling:
Tightening the nut more slowly without excessive pressure, will frequently reduce or sometimes solve completely, the problem. As the installation RPM speed increases, the heat generated with friction during tightening escalates the chances of thread galling.
Reduce the friction by applying a suitable lubricant to the thread frequently eliminates thread galling. Typical lubricants are chloride-paraffine, molykoat lacquer, molybdenum disulphide, high pressure oil, graphite, mica, or talc, some assemblies where there is extreme pressure, corrosion resistant grease or waxes may also be effective
What does TPI stand for?: TPI stands for “threads per inch” which literally means the number of threads within each inch on a nut, a bolt, or a fastener. To determine the TPI of a nut, either count the number of threads contained within an inch of length on the male fastener or use a thread checker. If the male fastener is less than an inch, measure 1/2", count how many there are then multiply the number by 2
Difference between UNC v BSW Threads: UNC and BSW have the same thread per inch value, except for the 1/2" size. Theoretical it would be possible to interchange them as they have the same amount of threads per inch. However due to the difference in thread angle, the connection would not be as strong as when using the proper combinations
Difference between UNC v BSW Threads: UNC and BSW have the same thread per inch value, except for the 1/2" size. Theoretical it would be possible to interchange them as they have the same amount of threads per inch. However due to the difference in thread angle, the connection would not be as strong as when using the proper combinations
Measurements: Every effort has been made to ensure all measurements on our site are accurate and to the relevant standard, they should only be used as a guide. If you see a problem with our specifications please contact us
Dimensions: Our stock is sourced from various suppliers, therefore differences may exist between batches such as height, width, visible stamped markings, appearance or actual finish
Photos: Represent the product, not the size. Our title has industry sizing but if additional information is required refer to the CAD drawing, Specifications Table or Technical Specifications PDF
Updating our site: If you see any problems with any of our specifications or you require additional information please contact us
PDF data sheet: PDF data sheets are provided as a reference guide only. Specifications may change without notice
Disclaimer: Technical data and specifications were researched and compiled from numerous industry sources for the sole purpose of providing basic information. All material is advisory only and its use by anyone is entirely voluntary. Reliance on it for any purpose by anyone is at the sole risk of that person, and Bolt and Nut Australia is not responsible for any loss, claim or damages arising therefrom. In developing this information, Bolt and Nut Australia has made a determined effort to present it accurately
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Weigh less than 500grams

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Unit 9, 93 Rivergate Place, Murarrie, QLD

Place your order online and we will have it ready within 2 hours. Call if required sooner
Pickup times between 8am - 5pm, Monday - Friday

Orders OVER $30

Weigh more than 500grams

Included is orders under $30 but weigh more than 500grams or wont fit in the slot of your letterbox

Including Large and Bulky heavy orders are sent:

FREE as a Parcel Delivery WITH TRACKING and delivery between 2-7 business days

Select an Express delivery service

From $10.00 Express Delivery 1-4 business days
From $12.00 StarTrack PREMIUM Express Delivery 1-3 business days

Click & Collect - Warehouse pickup

Unit 9, 93 Rivergate Place, Murarrie, QLD

Place your order online and we will have it ready within 2 hours. Call if required sooner
Pickup times between 8am - 5pm, Monday - Friday

All delivery dates are estimated and depend on stock availability, delivery location, service chosen, size of order, time of year, when order was placed e.g long weekends or sale periods.

Further delivery information can be found on our Delivery page on this website

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