HEX HEAD BOLTS-A Comprehensive Technical Introduction High-Strength Fasteners for Demanding Applications

2026-08-31 IB

1. Taw qhia

Qib 10.9 Dacromet hexagon taub hau bolts sawv cev rau cov chav kawm zoo tshaj plaws ntawm cov khoom siv muaj zog uas siv dav hauv tsheb, kev tsim kho, cua zog, tshuab hnyav, thiab kev siv hauv vaj tse. Cov bolts no muab peb yam tseem ceeb: kev ua tau zoo ntawm cov cuab yeej cuab yeej chav kawm 10.9, ntau yam thiab txhim khu kev qha geometry ntawm lub taub hau hexagonal tsim, thiab kev tiv thaiv corrosion zoo heev los ntawm Dacromet (zinc-flake) txheej.

2. Chav Kawm Khoom 10.9 - Cov Khoom Siv Hluav Taws Xob

TS EN ISO 898-1 Cov cuab yeej cuab tam chav kawm 10.9 tau txhais hauv ISO 898-1 (Cov cuab yeej ntawm cov fasteners ua los ntawm carbon steel thiab alloy steel - Ntu 1: Bolts, screws thiab studs). Lub npe "10.9" qhia tias lub zog tensile nominal ntawm 1000 MPa thiab cov txiaj ntsig-rau-tensile piv ntawm kwv yees li 0.9. Cov fasteners no feem ntau yog tsim los ntawm quenched thiab tempered alloy steels (xws li, 35CrMo, 42CrMo, los yog boron steels) thiab yog haum rau high-load structural thiab dynamic daim ntaub ntawv.

Cov cuab yeej tseem ceeb (ISO 898-1)

Khoom	Nominal	Yam tsawg kawg nkaus	Chav tsev
Tensile zog Rm	1000	1040	MPa
Pov thawj kev nyuaj siab / tawm lub zog Rp0.2	900	940	MPa
Kev ntxhov siab nyob rau hauv pov thawj load Sp	830	—	MPa
Elongation tom qab tawg A	—	9	%
Vickers hardness HV	—	320-380 : kuv	HV
Rockwell hardness HRC	—	32–39 : kuv	HRC

Piv nrog rau cov cuab yeej hauv chav kawm 8.8, Qib 10.9 muaj kwv yees li 25-30% siab dua tensile muaj peev xwm thiab muaj peev xwm ntau dua clamp load. Qhov no ua rau nws qhov kev xaiv zoo tshaj plaws rau cov pob qij txha tseem ceeb hauv cov cav, chassis, cov qauv steel ua haujlwm, thiab cov cuab yeej hnyav uas yuav tsum tau txo qhov hnyav thiab ua haujlwm siab dua.

3. Hexa Bolts — Tsim & Qauv

Hexagon taub hau bolts (feem ntau hu ua hex bolts) yog cov feem ntau siv sab nraud-wrenching fasteners. Lub taub hau rau lub taub hau muab qhov zoo tshaj plaws torque kis nrog tus qauv qhib-kawg lossis lub qhov (socket wrenches) thiab tso cai rau kev nkag mus los ntawm ntau lub kaum ntse ntse. Ob tug thawj coj thoob ntiaj teb tus qauv tswj hwm metric hex bolts:

TS EN ISO 4014 / DIN 931 - Ib nrab threaded (shank hauv qab lub taub hau)
TS EN ISO 4017 / DIN 933 - Cov xov xov tag nrho

Ib feem-xov bolts (ISO 4014) yog qhov nyiam thaum lub dav hlau shear yuav tsum ua ntawm lub shank uas tsis muaj threaded kom muaj peev xwm shear ntau dua, los yog thaum yuav tsum tau clamping ntev. Tag nrho cov xov bolts raug xaiv rau versatility thiab thaum tag nrho ntev yuav koom nrog ib tug txiv ntseej los yog tapping lub qhov.

Hom Dimensions (Kev Xaiv Qhov Loj, ISO 4014 / DIN 931)

Nominal Loj	Pitch (mm)	Hla Flats s (mm)	Lub taub hau qhov siab k (mm)	Xov Length b ≤125 mm	Wrench Loj
M8	1.25	13	5.3	22	13
M10	1.5	16 / 17	6.4	26	16 / 17
M12	1.75	18 / 19	7.5	30	18 / 19
M16	2.0	24	10.0	38	24
M20	2.5	30	12.5	46	30
M24	3.0	36	15.0	54	36

Lus Cim: Qhov ntev ntawm lub tiaj tiaj yuav txawv me ntsis ntawm ISO thiab DIN series rau qee qhov ntau thiab tsawg (piv txwv li, M10 thiab M12). Nco ntsoov xyuas tus qauv tsim nyog rau daim ntawv thov. Cov khoom lag luam qib A thiab B txhais tau tias qhov ntev ntev; Qib A yog nruj dua thiab feem ntau siv rau cov kab me me.

Qhov zoo ntawm Hexagon Head Design

Siab torque kis tau tus mob nrog cov cuab yeej txheem
Kev nkag tau zoo hauv qhov chaw kaw los ntawm rau lub kaum ntse ntse
Kev tsim khoom raug nqi zoo thiab muaj dav dav
Tau tshaj ntau yam ntawm cov txiv ntseej, ntxhua khaub ncaws, thiab cov khoom siv xauv

4. Dacromet Txheej - Kev Tiv Thaiv Corrosion Advanced

Dacromet yog cov txheej txheem zinc-flake txheej txheej txheem (thawj tsim los ntawm Hlau Coatings International). Nws muaj zinc thiab txhuas flakes tshem tawm nyob rau hauv ib qho inorganic binder, siv los ntawm dip-spin los yog tshuaj tsuag txoj kev thiab kho ntawm kwv yees li 300-340 ° C. Qhov tshwm sim nyias, ntom ntom, nyiaj-grey zaj duab xis muab ntau lub tshuab tiv thaiv corrosion tsis muaj kev pheej hmoo ntawm hydrogen embrittlement - qhov txiaj ntsig tseem ceeb rau cov khoom siv zog siab xws li Qib 10.9 thiab 12.9.

Cov yam ntxwv tseem ceeb ntawm kev ua haujlwm

Parameter	Tus nqi / kev ua tau zoo
Txheej thickness	5 - 15 μm (Qib A ≈ 5 μm; Qib B ≈ 8 μm)
Neutral ntsev tsuag (ASTM B117)	500 - 1000+ teev rau liab xeb (nyob ntawm qib)
Thaum tshav kub kub kuj	Txog li 300 ° C tas mus li (txheej txheej tseem tiv thaiv)
Hydrogen embrittlement txaus ntshai	Tsis muaj (tsis yog-electrolytic txheej txheem, tsis muaj kua qaub pickling)
Coefficient ntawm kev sib txhuam	0.12 - 0.18 (nrog cov roj nplua nyeem xws li Dacromet 500)
Qhov tshwm sim	Hlau nyiaj-grey; uniform kev pab cuam txawm nyob rau threads

Sib piv nrog Cov Txheej Txheem Txheej Txheem

Feature	Electro Zinc	Kub-dip Galvanizing	Dacromet
Thickness	5-15 hli	40-85 hli	5-15 hli
Salt spray (xiav liab)	72-240 Nws	400-800 h	500-1000+ h
H₂ embrittlement risk	Siab	Tam sim no	Tsis muaj
Xov haum cuam tshuam	Tsawg	Siab (feem ntau yuav tsum tau oversize)	Tsawg kawg
Haum rau 10.9+	Txwv tsis pub	Yuav tsum ceev faj	Zoo heev

Vim tias cov txheej txheem Dacromet tsis cuam tshuam txog kev tsim hluav taws xob hydrogen thiab tsis muaj cov kua qaub qaub, nws yog qhov nyiam (thiab feem ntau yuav tsum tau) txheej rau Qib 10.9 thiab siab dua fasteners nyob rau hauv tsheb thiab cov qauv specifications.

5. Kev sib xyaw ua ke zoo & Cov ntawv thov ib txwm

Thaum Qib 10.9 lub zog, hexagonal lub taub hau geometry, thiab Dacromet txheej yog sib xyaw ua ke, qhov tshwm sim fastener muaj qhov sib npaug ntawm kev ua haujlwm zoo, kev sib dhos yooj yim, thiab kev ua haujlwm ntev nyob rau hauv ib puag ncig corrosive.

Cov txiaj ntsig tseem ceeb

1.High clamp load peev xwm - ua kom sib zog sib koom tsim thiab kev ntseeg siab dua nyob rau hauv kev co thiab dynamic loads.

2.Superior corrosion kuj - ntsev-txheej ua tau zoo tshaj li cov pa zinc plating thaum khaws cov xov raug.

3.Hydrogen-embrittlement dawb - qhov tseem ceeb muaj kev nyab xeeb feature rau high-strength steel fasteners.

4.Controlled kev sib txhuam - lubricated Dacromet variants muab kev sib raug zoo torque-tension, txhim kho kev sib dhos sib xws.

5.Thermal stability - tseem muaj kev tiv thaiv ntawm qhov kub siab uas tau ntsib nyob rau hauv lub cav compartments thiab cov khoom siv.

Tej daim ntawv thov teb

Automotive: chassis, ncua kev kawm ntawv, cav mounts, powertrain Cheebtsam
Cua zog: ntauwd flanges, nacelle lug, foundation anchors
Hnyav kev tsim kho & infrastructure: steel choj, kis tau tus yees, railway
Kev ua liaj ua teb thiab kev tsim kho tshuab ua haujlwm sab nraum zoov
Cov khoom siv hauv hiav txwv thiab ntug hiav txwv (nrog kev xaiv qib tsim nyog)

6. Cov lus xaus

Qib 10.9 Dacromet hexagon taub hau bolts xa ib qho kev txhim khu kev qha ua ke ntawm lub zog tensile siab, kev teeb tsa geometry, thiab kev tiv thaiv corrosion mus sij hawm ntev. Los ntawm ua tau raws li cov txheej txheem nruj me ntsis ntawm ISO 898-1 Chav Kawm 10.9, ua raws li cov qauv tsim raws li ISO 4014, thiab siv cov txheej txheem hydrogen-embrittlement-free zinc-flake txheej, cov fasteners no muab cov engineers nrog cov pov thawj kev daws teeb meem rau cov pob qij txha tseem ceeb raug rau ob qho tib si kev ntxhov siab thiab ib puag ncig hnyav.

Ua ntej. Tom ntej no.

Xov xwm tshiab