{"id":5589,"date":"2025-12-22T08:47:06","date_gmt":"2025-12-22T08:47:06","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5589"},"modified":"2025-12-22T08:49:32","modified_gmt":"2025-12-22T08:49:32","slug":"gb-t-6172-2-2016-hex-thin-lock-nuts-non-metallic-insert","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/ms\/blog\/gb-t-6172-2-2016-hex-thin-lock-nuts-non-metallic-insert\/","title":{"rendered":"GB\/T 6172.2-2016 Nat Kunci Nipis Heks Sisipan Bukan Logam"},"content":{"rendered":"
\n

GB\/T 6172.2-2016 Nat Kunci Nipis Heks Sisipan Bukan Logam<\/h1>\n

1. Pengenalan<\/h2>\n

Hexagon thin lock nuts with non-metallic inserts are essential fasteners in mechanical engineering, providing reliable locking mechanisms to prevent loosening under vibration. The GB\/T 6172.2-2016 standard specifies the dimensions, technical requirements, and markings for prevailing torque type hexagon thin nuts with non-metallic inserts. This standard is crucial for ensuring consistency and quality in manufacturing and application across industries such as automotive, aerospace, and machinery.<\/p>\n

These nuts are designed for use in assemblies where space is limited, offering a thin profile while maintaining locking performance through a non-metallic insert, typically nylon, which provides prevailing torque. The standard covers sizes from M3 to M36, ensuring compatibility with various bolt threads.<\/p>\n

2. GB\/T 6172.2-2016 Standard Overview<\/h2>\n

Released in 2016, GB\/T 6172.2 supersedes earlier versions and aligns with international standards like ISO 10511 for prevailing torque hexagon thin nuts. It applies to nuts made from steel with non-metallic inserts, focusing on type dimensions and performance.<\/p>\n

The standard’s scope includes mechanical properties, tolerances, and surface treatments, making it applicable for general-purpose fastening in engineering contexts.<\/p>\n

3. Dimensions and Specifications<\/h2>\n

The standard defines key dimensions for hexagon thin lock nuts, ensuring precise fit and function. All dimensions are in millimeters (mm). Below is a table summarizing the specifications for thread sizes from M3 to M36.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Thread Size D<\/th>\nM3<\/th>\nM4<\/th>\nM5<\/th>\nM6<\/th>\nM8<\/th>\nM10<\/th>\nM12<\/th>\n(M14)<\/th>\nM16<\/th>\nM20<\/th>\nM24<\/th>\nM30<\/th>\nM36<\/th>\n<\/tr>\n<\/thead>\n
P (Pitch)<\/td>\n0.5<\/td>\n0.7<\/td>\n0.8<\/td>\n1<\/td>\n1.25<\/td>\n1.5<\/td>\n1.75<\/td>\n2<\/td>\n2<\/td>\n2.5<\/td>\n3<\/td>\n3.5<\/td>\n4<\/td>\n<\/tr>\n
dseorang<\/sub> maksimum<\/td>\n3.45<\/td>\n4.6<\/td>\n5.75<\/td>\n6.75<\/td>\n8.75<\/td>\n10.8<\/td>\n13<\/td>\n15.1<\/td>\n17.3<\/td>\n21.6<\/td>\n25.9<\/td>\n32.4<\/td>\n38.9<\/td>\n<\/tr>\n
dseorang<\/sub> min<\/td>\n3<\/td>\n4<\/td>\n5<\/td>\n6<\/td>\n8<\/td>\n10<\/td>\n12<\/td>\n14<\/td>\n16<\/td>\n20<\/td>\n24<\/td>\n30<\/td>\n36<\/td>\n<\/tr>\n
dw<\/sub> min<\/td>\n4.56<\/td>\n5.9<\/td>\n6.9<\/td>\n8.9<\/td>\n11.6<\/td>\n14.6<\/td>\n16.6<\/td>\n19.6<\/td>\n22.5<\/td>\n27.7<\/td>\n33.2<\/td>\n42.8<\/td>\n51.1<\/td>\n<\/tr>\n
e min<\/td>\n6.01<\/td>\n7.66<\/td>\n8.79<\/td>\n11.05<\/td>\n14.38<\/td>\n17.77<\/td>\n20.03<\/td>\n23.35<\/td>\n26.75<\/td>\n32.95<\/td>\n39.55<\/td>\n50.85<\/td>\n60.79<\/td>\n<\/tr>\n
h max<\/td>\n3.9<\/td>\n5<\/td>\n5<\/td>\n6<\/td>\n6.76<\/td>\n8.56<\/td>\n10.23<\/td>\n11.32<\/td>\n12.42<\/td>\n14.9<\/td>\n17.8<\/td>\n22.2<\/td>\n25.5<\/td>\n<\/tr>\n
h min<\/td>\n3.42<\/td>\n4.52<\/td>\n4.52<\/td>\n5.52<\/td>\n6.18<\/td>\n7.98<\/td>\n9.53<\/td>\n10.22<\/td>\n11.32<\/td>\n13.1<\/td>\n16<\/td>\n20.1<\/td>\n23.4<\/td>\n<\/tr>\n
m min<\/td>\n1.55<\/td>\n1.95<\/td>\n2.45<\/td>\n2.9<\/td>\n3.7<\/td>\n4.7<\/td>\n5.7<\/td>\n6.42<\/td>\n7.42<\/td>\n9.1<\/td>\n10.9<\/td>\n13.9<\/td>\n16.9<\/td>\n<\/tr>\n
mw<\/sub> min<\/td>\n1.24<\/td>\n1.56<\/td>\n1.96<\/td>\n2.32<\/td>\n2.96<\/td>\n3.76<\/td>\n4.56<\/td>\n5.14<\/td>\n5.94<\/td>\n7.28<\/td>\n8.72<\/td>\n11.12<\/td>\n13.52<\/td>\n<\/tr>\n
s max<\/td>\n5.5<\/td>\n7<\/td>\n8<\/td>\n10<\/td>\n13<\/td>\n16<\/td>\n18<\/td>\n21<\/td>\n24<\/td>\n30<\/td>\n36<\/td>\n46<\/td>\n55<\/td>\n<\/tr>\n
s min<\/td>\n5.32<\/td>\n6.78<\/td>\n7.78<\/td>\n9.78<\/td>\n12.73<\/td>\n15.73<\/td>\n17.73<\/td>\n20.67<\/td>\n23.67<\/td>\n29.16<\/td>\n35<\/td>\n45<\/td>\n53.8<\/td>\n<\/tr>\n
Weight per 1000 pcs (steel) \u2248 kg<\/td>\n0.335<\/td>\n0.694<\/td>\n0.94<\/td>\n1.85<\/td>\n3.61<\/td>\n7.01<\/td>\n10.18<\/td>\n15.08<\/td>\n22.03<\/td>\n38.98<\/td>\n68.12<\/td>\n145.2<\/td>\n243.8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

4. Technical Requirements<\/h2>\n

The nut body is made from steel, with the insert recommended as nylon 66. General technical conditions follow GB\/T 16938. Thread tolerance is 6H per GB\/T 193 and GB\/T 9145. Mechanical performance grades are 04 or 05 (QT) for M5 to M36, with smaller sizes per agreement, referencing GB\/T 3098.2 and GB\/T 3098.9.<\/p>\n

Tolerances: Product grade A for D \u2264 16 mm, B for D > 16 mm, per GB\/T 3103.1. Surface treatments include untreated, electroplating per GB\/T 5267.1, or non-electrolytic zinc flake per GB\/T 5267.2. Surface defects follow GB\/T 5779.2, and acceptance\/packaging per GB\/T 90.1 and GB\/T 90.2.<\/p>\n

5. Key Requirements in GB\/T 6172.2-2016<\/h2>\n

The standard emphasizes prevailing torque for locking, ensuring nuts resist vibration. Materials must meet specified grades for durability. Testing includes torque verification to confirm locking performance.<\/p>\n

6. Applications and Industry Impact<\/h2>\n

These nuts are used in automotive assemblies, machinery, and electronics for secure fastening in compact spaces. The standard enhances quality control, reducing failure risks in critical applications.<\/p>\n

7. Frequently Asked Questions (FAQ)<\/h2>\n
\n
What materials are recommended for the non-metallic insert?<\/dt>\n
The standard recommends nylon 66 for its durability and locking properties.<\/dd>\n
What is the thread tolerance specified?<\/dt>\n
Thread tolerance is 6H, ensuring compatibility with standard bolts.<\/dd>\n
How does this standard differ from GB\/T 6172.1?<\/dt>\n
GB\/T 6172.2 focuses on thin nuts with non-metallic inserts, while 6172.1 covers all-metal types.<\/dd>\n
Rawatan permukaan apa yang dibenarkan?<\/dt>\n
Untreated, electroplated per GB\/T 5267.1, or zinc flake coated per GB\/T 5267.2, with others by agreement.<\/dd>\n
For what sizes is product grade A applied?<\/dt>\n
Product grade A for diameters \u2264 16 mm, and B for > 16 mm.<\/dd>\n
How is the prevailing torque tested?<\/dt>\n
Per mechanical performance standards like GB\/T 3098.9, ensuring consistent locking force.<\/dd>\n<\/dl>\n<\/div>\n

 <\/p>\n

 <\/p>","protected":false},"excerpt":{"rendered":"

GB\/T 6172.2-2016 Hex Thin Lock Nuts Non-Metallic Insert 1. Introduction Hexagon thin lock nuts with non-metallic inserts are essential fasteners in mechanical engineering, providing reliable locking mechanisms to prevent loosening under vibration. The GB\/T 6172.2-2016 standard specifies the dimensions, technical requirements, and markings for prevailing torque type hexagon thin nuts with non-metallic inserts. This standard […]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[220],"tags":[],"class_list":["post-5589","post","type-post","status-publish","format-standard","hentry","category-technical-documentation-and-references"],"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/ms\/wp-json\/wp\/v2\/posts\/5589","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/ms\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/korea-transmission.com\/ms\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/ms\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/ms\/wp-json\/wp\/v2\/comments?post=5589"}],"version-history":[{"count":2,"href":"https:\/\/korea-transmission.com\/ms\/wp-json\/wp\/v2\/posts\/5589\/revisions"}],"predecessor-version":[{"id":5592,"href":"https:\/\/korea-transmission.com\/ms\/wp-json\/wp\/v2\/posts\/5589\/revisions\/5592"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/ms\/wp-json\/wp\/v2\/media?parent=5589"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/ms\/wp-json\/wp\/v2\/categories?post=5589"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/ms\/wp-json\/wp\/v2\/tags?post=5589"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}