2.1 材料：C67S、C75S、70(GB/T 1222)、65Mn(GB/T1222、GB/T 4357)、60Si2MnA(GB/T1222、GB/T 4357)。
2.2 熱處理硬度
公稱規格 | 維氏硬度HV | 洛氏硬度HRC |
d1≤48mm | 470~580 | 47~54 |
48mm＜d1≤200mm | 435~530 | 44~51 |
200mm＜d1≤300mm | 390~470 | 40~47 |
熱處理硬度僅供生產工藝參考，不作為驗收依據。 | ||
3. 性能
圓 錐 變 形
公稱規格 | 試驗力F（1±5％） N | h-s max | |
标準型（A型） | 重型（B型） | ||
d1≤22mm | 30 | 60 | b × 0.03 |
22mm＜d1≤38mm | 40 | 80 | |
38mm＜d1≤82mm | 60 | 120 | |
82mm＜d1≤150mm | 80 | 160 | b × 0.02 |
150mm＜d1≤300mm | 150 | 300 | |
h 一一 測試圓錐變形裝置兩闆間的距離； s 一一 擋圈實際厚度； b一一 擋圈開口對面的徑向寬度。 | |||
縫規間隐
公稱規格d1 | 縫規間隙c |
d1≤100mm | 1.5×s |
100mm＜d1≤300mm | 1.8×s |
3.4 彈性
3.4.1 孔用擋圈應進行彈性試驗，試驗後，将擋圈安裝到最大直徑d2 max的溝槽内，應在自重下保持不松動。
3.4.2 軸用擋圈應進行彈性試驗，試驗後，将擋圈安裝到最小直徑d2 min的溝槽内，應在自重下保持不松動。
3.4.3 開口擋圈應進行彈性試驗，試驗後，擋圈内徑（d）應不大于溝槽直徑（d2）的基本尺寸。
3.4 開口擋圈韌性
開口擋圈應進行韌性試驗。試驗後，擋圈不應斷裂。
4. 表面處理
擋圈表面處理由制造者确定，并應符合以下規定。
表面處理
表面處理 | 防腐性能 |
磷化技術要求按GB/T 11376規定 | 8h無鏽蝕，試驗方法按GB/T 10125規定 |
氧化 | 供需協議 |
其他 | 供需協議 |
當采用上述以外的表面處理時，塗鍍後擋圈厚度可能超過标準上限要求，因此，當計算溝槽尺寸時，應考慮這些因素。
5. 試驗方法
5.1 孔用、軸用擋圈折彎試驗
将擋圈的一半夾在兩個鉗口中，鉗口的圓角半徑應與擋圈厚度相同（r=s，見圖)。然後反複輕捶打或者使用杠杆将擋圈彎曲至30°。
5.2 孔用、軸用擋圈變形試驗
将擋圈放在兩個平行闆之間，并按下圖加載達到F力時，測量h尺寸，計算（h-s）值。
5.3 孔用、軸用擋圈縫規試驗
将擋圈放入縫規，見圖。
說明：
c——縫規間隙；
s——擋圈厚度。
5.4 彈性試驗
5.4.1 孔用擋圈
應使用符合JB/T 3411.48規定的安裝鉗将擋圈壓縮到0.99×d1三次，或将擋圈穿過一個直徑為0.99×d1的錐套（見下圖）三次後，再安裝到最大直徑d2 max的溝槽内。
5.4.2 軸用擋圈
應使用符合JB/T 3411.47規定的安裝鉗将擋圈擴張到1.01×d1三次，或将擋圈穿過一個直徑為1.01×d1 的錐棒（見下圖）三次後，再安裝到最小直徑的d2 min的溝槽内。
5.4.3 開口擋圈
将開口擋圈裝入試驗軸上，然後拆下測量内徑（d）尺寸。試驗軸的直徑應等于溝槽直徑（d2）的基本尺寸。
5.5 開口擋圈韌性試驗
将開口擋圈裝在試驗軸上，保持48h，目測檢查。試驗軸的直徑應等于溝槽基本尺寸（d2）的1.1倍。
5.6 表面處理試驗
磷化防腐性能應按GB/T 10125規定的中性鹽霧試驗進行試驗。
6 表面缺陷
6.1 擋圈表面不允許有裂紋。
6.2 擋圈不允許有影響使用的毛刺。
7 驗收檢查
擋圈尺寸、性能特性及合格質量水平（AQL)按下表規定，其餘驗收檢查按GB／T90.l規定。
尺寸特性
序号 | 尺寸特性 | 合格質量水平AQL |
1 | 擋圈厚度s | 1 |
2 | d3孔用、軸用擋圈的外徑/内徑 | 1 |
3 | D開口擋圈公稱直徑 | 1 |
4 | B開口擋圈開口寬度 | 1 |
5 | 其他 | 1.5 |
6 | 不合格緊固件* | 2.5 |
* 不合格緊固件——有一個或多個缺陷的緊固件。 | ||
性能特性
序号 | 性能特性 | 合格質量水平AQL |
1 | 孔用、軸用擋圈：折彎試驗 | 1 |
2 | 孔用、軸用擋圈：圓錐變形試驗 | 1 |
3 | 孔用、軸用擋圈：縫規試驗 | 1 |
4 | 孔用、軸用擋圈：彈性 | 1 |
5 | 孔用、軸用擋圈：彈性試驗 | 1 |
6 | 孔用、軸用擋圈：韌性試驗 | 1 |
7 | 表面處理 | 1.5 |
8 | 其他* | 1.5 |
* 供需協議的其他性能特性。 | ||
8 驗收檢查
标志與包裝按GB/T 90.2規定。
Specifications of high strength bolts with large hexagon head, large hexagon nuts, plain washers for steel structures
Self-tappingscrew connections - Specification ofthepilotholediameterand tighteningtorque
Composite sealing gasket material
Corrosion of metals and alloys - Corrosivity of atmospheres - Part 1 : Classification, determination and estimation
Corrosion of metals and alloys - Corrosivity of atmospheres - Part 2: Guiding values for the corrosivity categories
Steel wire ropes for general purposes
Specifications for spring washers - Conical spring washers
Hot formed helical compression springs - Technical Requirement
High-strength structural bolting assemblies for preloading - Part 1: General requirements
Cold coiled helical springs technical specifications - Part 1: Extension spring
Cold coiled helical springs technical specifications - Part 2: Compressions spring
Specification For Wire Thread Inserts
General specifications for packing of mechanical and electrical product
Fasteners - General requirements for bolts,screws,studs and nuts
24° Cone Connectors - Specification
Flared couplings - Specification
Specification of metallic ring-joint gaskets for steel pipe flanges
Specifications of high strength bolts with large hexagon head, large hexagon nuts, plain washers for steel structures
Specification of gauges for general purpose screw threads
Fasteners - Marking and packaging
Plain Washers for Bolts, Screws and Nuts - General Plan
Fasteners - Surface discontinuities - Bolts, screws and studs for general requirements
Fasteners-Surface discontinuities - Nuts
Fasteners - Surface discontinuities - Bolts, screws and studs for special requirements
Technical requirements for anchors
Specifications For Drive Rivets
Technical requirement for sets of torshear type high strength bolt hexagon nut and plain washer for steel structures
Specifications for parts and units of jigs and fixtures
Grease nipples and lubricating cups technical specification
Oil level indicators technical specification
Counterbores for hexagon socket head and slotted cheese head screws
Procurement Specification For Self-Locking Nuts
Specification for tab washer
Specifications for pins
Spcifications for ring - Cutting rings
Technical requirements of malleable cast iron pipe fittings
Fasteners - Part 27: Steel screws, bolts and studs made of steel with pre-adhesive coating - Technical specifications
metal washers; technical delivery conditions
Steel flat products; Hot rolled plate 3 to 150 mm thick; Permissible deviations of dimension, weight and form
Flat products of steel; cold rolled steel strip; dimensions, tolerances on dimensions and form.
Commercial vehicles - Wheel-hub attachment dimensions
Corrosion of metals and alloys - Corrosivity of atmospheres - Guiding values for the corrosivity categories
Tools for pressing - Elastomer pressure springs - Part 2: Specification of accessories
Hydraulic fluid power - Two-, three- and four-port screw-in cartridge valves - Cavities
Cold heading dies for fasteners - Specifications
Specification of Stamping Die Components
Specifications for parts and units of jigs and fixtures
Internal combustion engines - Cylinder head and flywheel nuts - Specifications
Timber structures - Dowel-type fasteners - Requirements
Aerospace series - Bolts, MJ threads, in heat resisting nickel base alloy NI-PH2601 (Inconel 718) - Classification: 1275 MPa (at ambient temperature)/650 °C - Technical specification
High-strength structural bolting assemblies for preloading - Part 1: General requirements
Flanges and their joints - Bolting - Part 3: Classification of bolt materials for steel flanges, class designated
Metallic products - Types of inspection documents
Flanges and their joints - bolting - Part 2: Classification of bolt materials for steel flanges, PN designated
Flanges and their joints - bolting - Part 1: Selection of bolting
Aerospace series - Inserts, screw thread, helical coil, self locking - Technical specification
Aerospace series - Inserts, screw thread, helical coil, self-locking - Assembly procedure
Specification for Selection of Steel Pipe Flanges , Gaskets and Bolting (PN designated)
Alloy and Carbon Steel Bolting for Use in the Petroleum and Natural Gas Industries
Standard Specification for Steel Transmission Tower Bolts, Zinc-Coated and Bare
Mechanical fixation component for waterproofing membrane roofing
Construction machinery and equipment Specification of high strength fasteners
Fastenersart - Standard - Cap Screws, Hex Bolts, and Hex Nuts
Steel Self-Drilling Tapping Screws
Technical conditions for threaded fasteners with adhesive coating-Part 1: Microencapsulated locking coating
Technical condions for threaded fasteners with adhesive coating-Part 2: Polyamlde locking coating
Technical Supply Conditions For Threaded Steel Fasteners - Part 1 General Requirements For Bolts, Screws And Studs
General data for machine screws and tapping screws
Plain nuts and slotted nuts - Part 1: General specification
Disc springs - Calculation
