{"id":612034,"date":"2026-09-06T16:45:30","date_gmt":"2026-09-06T16:45:30","guid":{"rendered":"https:\/\/www.olympiajournal.com\/news\/story\/612034\/finethread-109-highstrength-bolts-din960-din961.html"},"modified":"2026-09-06T16:45:30","modified_gmt":"2026-09-06T16:45:30","slug":"finethread-109-highstrength-bolts-din960-din961","status":"publish","type":"post","link":"https:\/\/www.pennsylvania-magazine.com\/news\/story\/612034\/finethread-109-highstrength-bolts-din960-din961.html","title":{"rendered":"Fine\u2011Thread 10.9 High\u2011Strength Bolts DIN960 DIN961"},"content":{"rendered":"

Ningbo, Zhejiang<\/strong>, China<\/strong> – September <\/strong>6<\/strong>, 2026 – <\/strong>Main Applications of 10.9\u2011Grade Fine\u2011Thread Bolts: 10.9\u2011grade fine\u2011thread bolts feature smaller thread pitch, higher thread engagement and better anti\u2011loosening performance compared with coarse\u2011thread bolts. They are widely used for high\u2011strength connection scenarios requiring vibration resistance, high pre\u2011tension and compact installation space.<\/p>\n

They are commonly applied in automotive chassis, engine assemblies, heavy\u2011duty machinery, construction steel structures, hydraulic equipment and transmission systems. These fasteners are also preferred for thin\u2011wall components and parts subject to strong shock and alternating vibration. Fine\u2011thread 10.9 bolts<\/a> can maintain stable clamping force under heavy\u2011load working conditions, effectively preventing loosening caused by vibration. Besides, they are suitable for occasions with limited assembly space where coarse\u2011thread fasteners cannot fit.<\/p>\n

\"10.9\u7ea7\u7ec6\u7259\u5168\u72592.JPG\"<\/p>\n

2. Quality Requirements<\/p>\n

10.9\u2011grade fine\u2011thread bolts shall comply with relevant fastener<\/a> standards. The core mechanical properties include minimum tensile strength<\/a> of 1040\u202fMPa and yield strength of 940\u202fMPa. Full hardness inspection is required to avoid over\u2011tempering or brittleness.<\/p>\n

Fine thread tolerance must be strictly controlled to guarantee smooth thread fit. Surface defects such as cracks, burrs and scratches are prohibited. For anti\u2011loosening performance, thread profile shall be precise to sustain stable preload under vibration and alternating load.<\/p>\n

If surface treatment like hot\u2011dip galvanizing<\/a> or Dacromet is applied, coating thickness shall be uniform. Hydrogen embrittlement relief baking is mandatory after plating to prevent delayed fracture. Dimension sampling inspection, torque test and salt\u2011spray corrosion test shall be carried out for batch validation.<\/p>\n

3. Production Process<\/p>\n

Raw high\u2011strength alloy steel bars are first cut to required length. Then cold heading forms bolt head and blank body. Fine thread is produced by thread rolling instead of cutting, which improves thread\u2011fiber continuity and mechanical performance.<\/p>\n

Subsequently, heat treatment including quenching and tempering is performed to achieve 10.9 grade mechanical properties. After heat\u2011treatment, surface descaling is done, followed by surface anti\u2011corrosion treatment. Hydrogen baking shall be arranged right after electroplating.<\/p>\n

Final procedures cover dimensional checking, thread gauge inspection, hardness testing, visual defect screening. Qualified products are sorted and packed for delivery.<\/p>\n

\"\u5fae\u4fe1\u56fe\u7247_20260902154539.jpg\"<\/p>\n

About Us<\/strong><\/p>\n

Ningbo Zhongli Bolts Manufacturing Co., Ltd. founded in 2003, is a professional manufacturer of high-strength fasteners in different specifications for various models, which is covering an area of about 10,000 square meters, registered capital of 1500,000 RMB, with the total annual productivity of 8,000 tons per year.<\/p>\n

Media Contact<\/span>
Company Name:<\/strong> Ningbo Zhongli bolts manufacturing Co., Ltd.<\/a>
Contact Person:<\/strong> Media Relations
Email:<\/strong> Send Email<\/a>
Country:<\/strong> China
Website:<\/strong> https:\/\/www.cnzyl.com\/<\/a><\/p>\n

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

Ningbo, Zhejiang, China – September 6, 2026 – Main Applications of 10.9\u2011Grade Fine\u2011Thread Bolts: 10.9\u2011grade fine\u2011thread bolts feature smaller thread pitch, higher thread engagement and better anti\u2011loosening performance compared with coarse\u2011thread<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/www.pennsylvania-magazine.com\/news\/wp-json\/wp\/v2\/posts\/612034"}],"collection":[{"href":"https:\/\/www.pennsylvania-magazine.com\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pennsylvania-magazine.com\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pennsylvania-magazine.com\/news\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pennsylvania-magazine.com\/news\/wp-json\/wp\/v2\/comments?post=612034"}],"version-history":[{"count":0,"href":"https:\/\/www.pennsylvania-magazine.com\/news\/wp-json\/wp\/v2\/posts\/612034\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.pennsylvania-magazine.com\/news\/wp-json\/wp\/v2\/media?parent=612034"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pennsylvania-magazine.com\/news\/wp-json\/wp\/v2\/categories?post=612034"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pennsylvania-magazine.com\/news\/wp-json\/wp\/v2\/tags?post=612034"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}